🕷️ Crawler Inspector

URL Lookup

Direct Parameter Lookup

Raw Queries and Responses

1. Shard Calculation

Query:

Response:

Calculated Shard: 131 (from laksa098)

2. Crawled Status Check

Query:

curl -X POST \
  'http://laksa131.int.ahrefs:8124/' \
  -H 'Content-Type: text/plain' \
  -H 'X-ClickHouse-Database: crawler3' \
  -H 'Authorization: Basic YXBpOg==' \
  -d 'SELECT getAhrefsURLFromUnparsed(src_unparsed) AS found_url, ifNull(toUnixTimestamp(download_stamp), 0) AS crawl_time, ifNull(toUnixTimestamp(props_url_first_seen), 0) AS first_indexed_time, download_http_code AS http_code, src_unparsed AS src_unparsed, src_root_hash AS src_root_hash, history_drop_reason AS history_drop_reason, meta_title AS meta_title, meta_descriptions AS meta_descriptions, attrs_boilerpipe_text AS attrs_boilerpipe_text, attrs_markdown AS attrs_markdown, attrs_readable_markdown AS attrs_readable_markdown, meta_canonical AS meta_canonical FROM crawler3.page_info_local FINAL PREWHERE (src_root_hash, src_unparsed) IN ((getAhrefsRootHashFromUnparsed(getAhrefsUnparsedNoserviceFromURL(\'https://www.drugs.com/medical-answers/temperature-considered-fever-3565610/\')), getAhrefsUnparsedNoserviceFromURL(\'https://www.drugs.com/medical-answers/temperature-considered-fever-3565610/\'))) FORMAT JSONEachRow'

Response:

{"found_url":"https:\/\/www.drugs.com\/medical-answers\/temperature-considered-fever-3565610\/","crawl_time":1776663294,"first_indexed_time":1643851340,"http_code":200,"src_unparsed":"com,drugs!www,\/medical-answers\/temperature-considered-fever-3565610\/ s443","src_root_hash":"1816286668162245731","history_drop_reason":null,"meta_title":"What temperature is considered a fever?","meta_descriptions":["Official answer: A fever is defined as a body temperature of 38°C (100.4°F) or higher. Normal body temperature is usually..."],"attrs_boilerpipe_text":"Official Answer\nby Drugs.com\nA fever is defined as a body temperature of 38°C (100.4°F) or higher.\nNormal body temperature is usually 37°C (98.6°F), although it can be about a half degree Celsius higher or lower for some people and that’s normal for them.\nA fever occurs when your brain sets your body temperature higher than normal. Normal body temperature can change during the day based on activity level, hormone levels and whether you are sleeping or awake.\nYour normal body temperature is regulated or set by an area of your brain called your hypothalamus. Fever occurs when your body’s defense system — your immune system — reacts to an infection or illness, triggering your brain to raise your body temperature. This helps your immune system fight off the illness or infection, but a very high temperature can be dangerous.\nFever is not the same as hyperthermia, which means your body temperature goes up due to the outside temperature. Hyperthermia is not caused by your brain and immune system. An example would be heat stroke.\nFever grades in adults\nIn an adult, a fever may be elevated, high or very high:\nAn elevated body temperature is between 37.5°C and 38°C (99.5°F to 100.4°F).\nA fever is 38°C to 39.5°C (100.4°F to 103.1°F).\nA high fever is 39.5°C (103.1°F).\nA very high fever is above 41°C (105.8°F ).\nFever in babies and children\nAccording to the American Academy of Pediatrics (AAP), normal temperature in children varies with a child’s age, time of day and level of activity.\nFever is defined as a temperature of 38°C (100.4°F).\nA fever that requires a call to the pediatrician right away would be 38°C (100.4°F) or higher for a baby under 3 months old.\nA fever above 40°C (104°F) requires a call to the doctor at any age.\nHow to measure fever\nTo take your temperature, a digital thermometer is recommended instead of a mercury thermometer, especially in children, because mercury from a broken thermometer may be toxic.\nThere are three types of digital thermometers. There are many variations, so it is important to read and follow the thermometer instructions carefully. They all must be turned on and they will beep to tell you when to read them:\nA digital multi-use thermometer can be used to take a rectal, oral (mouth) or axillary (armpit) temperature in adults and children. In general, oral and armpit temperatures have not shown to be as accurate as rectal. Oral use is not recommended for children under age 4, according to the AAP, and AAP notes that rectal use is best, especially for infants and children under 3 months. Always clean the thermometer before and after use, and do not use a thermometer orally that has been used rectally. Do not take an oral temperature for 30 minutes after a hot or cold drink.\nA temporal or forehead artery thermometer reads your temperature from a blood vessel under the skin of your temple or forehead. You will need to check the instructions to find out how far away from your skin to hold it. If you have been in hot or cold temperatures, you should adjust to normal temperature before taking a reading.\nA tympanic digital thermometer measures heat inside your ear canal. This type can be used for anyone except babies.\nRelated questions\nCan You Take Tramadol with Acetaminophen, Ibuprofen, or Aspirin?\nAcetaminophen vs paracetamol: What do you need to know?\nWhat's the best medicine for sore throat?\nWhen and how to treat a fever\nSince ancient times, fevers have been associated with illness. It was not until the invention of the thermometer that normal temperature and fever temperatures were defined. Over time, the definitions have gone up and down slightly.\nAt this time, there is a debate on when to treat a fever.\nSome experts say a fever is a sign that your immune system is working and anything other than a very high fever should be left to run its course.\nOthers fear that fever may be damaging to your body and should be treated. Very high fever may damage body cells, especially brain cells.\nThere are no guidelines for when to treat a fever. Treatment may depend on the cause and other symptoms, but most experts agree that a very high fever should be treated.\nThe usual treatment for adults is an over-the-counter medicine such as\nacetaminophen\n,\nibuprofen\nor\naspirin\n. Rest and drinking lots of fluid are also recommended because fever can lead to fluid loss and dehydration.\nThe AAP recommends acetaminophen or ibuprofen, but not aspirin for treating fever in children. (Aspirin in children can raise the risk of a harmful condition called\nReye’s syndrome\n.)\nFor children over age 2, follow the label directions according to age or weight to give the right dose.\nFor children under age 2, call your pharmacist or pediatrician to find the correct dose.\nChildren should also drink fluids to avoid dehydration.\nUsing ice packs or alcohol rubs to reduce fever is not recommended.\nWhen to call your doctor for fever\nFor children, call the doctor if:\nA child less than 3 months old has a fever over 38°C (100.4°F). Always call for any child with a fever 40°C (104°F) or higher.\nA fever occurs with other symptoms, including headache, stiff neck, trouble breathing, rash, severe sore throat or ear pain, or persistent vomiting\nA fever lasts more than 24 hours in a child under 2 years old\nA fever causes a seizure\nA fever lasts more than 3 days in a child over 2 years old\nFor adults and older children, call if a fever is 104°F (40°C) or higher or if there are symptoms that include seizure, stiff neck, confusion, trouble breathing or any severe pain.\nReferences\nU.S. National Library of Medicine Bookshelf.\nHow is body temperature regulated and what is fever? InformedHealth.org. 2020. Available at: https:\/\/www.ncbi.nlm.nih.gov\/books\/NBK279457\/. [Accessed January 24, 2022].\nU.S. National Library of Medicine Bookshelf.\nPhysiology of Fever. StatPearls. August 2021. Available at: https:\/\/www.ncbi.nlm.nih.gov\/books\/NBK562334\/. [Accessed January 24, 2022].\nAmerican Academy of Pediatrics (AAP).\nFever Without Fear. April 2016. Available at: https:\/\/www.healthychildren.org\/English\/health-issues\/conditions\/fever\/Pages\/Fever-Without-Fear.aspx. [Accessed January 24, 2022].\nAmerican Academy of Pediatrics (AAP).\nHow to take your child’s temperature. Available at: https:\/\/www.healthychildren.org\/English\/health-issues\/conditions\/fever\/Pages\/How-to-Take-a-Childs-Temperature.aspx. [Accessed January 24, 2022].\nWise J.\nRectal thermometer should be used for accurate temperature reading, analysis finds. BMJ 2015;351:h6125. https:\/\/www.bmj.com\/content\/351\/bmj.h6125.full\nGeneva II,\nCuzzo B, Fazili T, Javaid W. Normal Body Temperature: A Systematic Review. Open Forum Infect Dis. 2019 Apr; 6(4): ofz032. https:\/\/dx.doi.org\/10.1093%2Fofid%2Fofz032.\nRay JJ,\nSchulman CI. Fever: suppress it or let it ride? J Thorac Dis. 2015 Dec; 7(12): E633-E636. https:\/\/dx.doi.org\/10.3978%2Fj.issn.2072-1439.2015.12.28.\nU.S. National Library of Medicine MedlinePlus.\nFever. December 2016. Available at: https:\/\/medlineplus.gov\/fever.html. [Accessed January 24, 2022].\nRead next\nHow much Tylenol (acetaminophen) can you take in a day?\nFor most adults, the maximum daily dose of Tylenol is 4,000 mg. This amount might be lower depending on your past medical history.\nContinue reading\nAdvil (ibuprofen) and Tylenol (acetaminophen) together?\nYes, it is safe to take Advil (ibuprofen) and Tylenol (acetaminophen) together if you need to for extra pain relief, such as for a dental extraction. This combination is more effective than taking either medication alone because they work through different mechanisms with minimal overlapping of side effects. But it is important to follow key safety guidelines.\nContinue reading\nWhat is paracetamol \/ Panadol called in the US?\nParacetamol is known as acetaminophen in the U.S. Acetaminophen relieves mild-to-moderate pain, headache and fever. It's available over-the-counter as brand names such as Tylenol, Mapap or Panadol, and also as generics and store-specific brands. There are no differences in the chemical or therapeutics uses of acetaminophen and paracetamol, although recommended doses or available products may differ between countries.\nContinue reading\nSee also:\nRelated medical questions\nAcetaminophen vs Ibuprofen: Which is better?\nWhat medications cause liver enzymes to be elevated?\nIs it safe to take acetaminophen every day?\nWhat cold medicine can you take with diabetes?\nHow Long Does Tylenol Take to Start Working?\nHow long does Percocet stay in your system?\nDoes Mucinex help with Covid?\nIs Tylenol (acetaminophen) a blood thinner?\nCan you Double up on Pain Meds? Safe Painkiller Combinations\nIs acetaminophen (Tylenol) an NSAID Drug?\nWhich painkiller should you use?\nHow can I treat a migraine at home safely?\nCan I take Tylenol while pregnant?\nCold, flu, hay fever, or COVID - Which one do I have?\nIs acetaminophen the same as Tylenol?\nCan you take paracetamol (acetaminophen) with antibiotics?\nWhat do I need to know about Drug Interactions?\nCan I give my dog or cat Tylenol (acetaminophen)?\nIs Tylenol (acetaminophen) an anti-inflammatory drug?\nOver the Counter Medication for Pets\nHow do I treat back pain without using opioids?\nWhat antibiotics are used to treat bronchitis?\nHow do I treat a mild case of COVID-19 at home?\nHow Can I Treat Muscle Strain or Pain?\nDrug information\nAcetaminophen\n(\n117 reviews\n)\nIbuprofen\n(\n245 reviews\n)\nAspirin\n(\n53 reviews\n)\nParacetamol\n(\n16 reviews\n)\nRelated support groups\nAcetaminophen\n(166 questions, 218 members)\nIbuprofen\n(268 questions, 243 members)\nAspirin\n(148 questions, 235 members)\nParacetamol\n(38 questions, 76 members)\nFever\n(108 questions, 179 members)\nMedical Disclaimer","attrs_markdown":"[Skip to main content](https:\/\/www.drugs.com\/medical-answers\/temperature-considered-fever-3565610\/#content)\n\n[![Drugs.com - Go to homepage](https:\/\/www.drugs.com\/img\/logo\/drugscom-logo.svg)](https:\/\/www.drugs.com\/)\n\n[Register](https:\/\/www.drugs.com\/account\/register\/) [Sign in](https:\/\/www.drugs.com\/account\/login\/)\n\nSite navigation\n\n- [**Upgrade to a Plus Plan** Remove ads and unlock more features.](https:\/\/www.drugs.com\/account\/plan\/?launch=ddc-tier-1)\n- [Register](https:\/\/www.drugs.com\/account\/register\/) [Sign in](https:\/\/www.drugs.com\/account\/login\/)\n- [Drugs A-Z](https:\/\/www.drugs.com\/drug_information.html)\n- [Pill Identifier](https:\/\/www.drugs.com\/pill_identification.html)\n- [Drug Interaction Checker](https:\/\/www.drugs.com\/drug_interactions.html)\n- [Compare Drugs](https:\/\/www.drugs.com\/compare\/)\n- [News](https:\/\/www.drugs.com\/news.html)\n- [Pro Edition](https:\/\/www.drugs.com\/professionals.html)\n- [More Resources](https:\/\/www.drugs.com\/sitemap.html)\n- [Help & Support](https:\/\/www.drugs.com\/support\/)\n\nClose\n\n1. [Home](https:\/\/www.drugs.com\/)\n2. [Medical Answers](https:\/\/www.drugs.com\/medical-answers\/)\n\n# What temperature is considered a fever?\nMedically reviewed by [Sally Chao, MD](https:\/\/www.drugs.com\/support\/editor\/32\/sally-chao-md.html). Last updated on Jan 20, 2025.\n\n**Official Answer** by Drugs.com\n\n**A fever is defined as a body temperature of 38°C (100.4°F) or higher.** Normal body temperature is usually 37°C (98.6°F), although it can be about a half degree Celsius higher or lower for some people and that’s normal for them.\n\nA fever occurs when your brain sets your body temperature higher than normal. Normal body temperature can change during the day based on activity level, hormone levels and whether you are sleeping or awake.\n\nYour normal body temperature is regulated or set by an area of your brain called your hypothalamus. Fever occurs when your body’s defense system — your immune system — reacts to an infection or illness, triggering your brain to raise your body temperature. This helps your immune system fight off the illness or infection, but a very high temperature can be dangerous.\n\nFever is not the same as hyperthermia, which means your body temperature goes up due to the outside temperature. Hyperthermia is not caused by your brain and immune system. An example would be heat stroke.\n\n## Fever grades in adults\nIn an adult, a fever may be elevated, high or very high:\n\n- An elevated body temperature is between 37.5°C and 38°C (99.5°F to 100.4°F).\n- A fever is 38°C to 39.5°C (100.4°F to 103.1°F).\n- A high fever is 39.5°C (103.1°F).\n- A very high fever is above 41°C (105.8°F ).\n## Fever in babies and children\nAccording to the American Academy of Pediatrics (AAP), normal temperature in children varies with a child’s age, time of day and level of activity.\n\nFever is defined as a temperature of 38°C (100.4°F).\n\n- A fever that requires a call to the pediatrician right away would be 38°C (100.4°F) or higher for a baby under 3 months old.\n- A fever above 40°C (104°F) requires a call to the doctor at any age.\n## How to measure fever\nTo take your temperature, a digital thermometer is recommended instead of a mercury thermometer, especially in children, because mercury from a broken thermometer may be toxic.  \n There are three types of digital thermometers. There are many variations, so it is important to read and follow the thermometer instructions carefully. They all must be turned on and they will beep to tell you when to read them:\n\n- A digital multi-use thermometer can be used to take a rectal, oral (mouth) or axillary (armpit) temperature in adults and children. In general, oral and armpit temperatures have not shown to be as accurate as rectal. Oral use is not recommended for children under age 4, according to the AAP, and AAP notes that rectal use is best, especially for infants and children under 3 months. Always clean the thermometer before and after use, and do not use a thermometer orally that has been used rectally. Do not take an oral temperature for 30 minutes after a hot or cold drink.\n- A temporal or forehead artery thermometer reads your temperature from a blood vessel under the skin of your temple or forehead. You will need to check the instructions to find out how far away from your skin to hold it. If you have been in hot or cold temperatures, you should adjust to normal temperature before taking a reading.\n- A tympanic digital thermometer measures heat inside your ear canal. This type can be used for anyone except babies.\n## Related questions\n- [Can You Take Tramadol with Acetaminophen, Ibuprofen, or Aspirin?](https:\/\/www.drugs.com\/medical-answers\/you-tramadol-acetaminophen-ibuprofen-aspirin-3571039\/)\n- [Acetaminophen vs paracetamol: What do you need to know?](https:\/\/www.drugs.com\/medical-answers\/acetaminophen-paracetamol-what-you-need-3576567\/)\n- [What's the best medicine for sore throat?](https:\/\/www.drugs.com\/medical-answers\/good-medicine-severe-sore-throat-612310\/)\n## When and how to treat a fever\nSince ancient times, fevers have been associated with illness. It was not until the invention of the thermometer that normal temperature and fever temperatures were defined. Over time, the definitions have gone up and down slightly.\n\nAt this time, there is a debate on when to treat a fever.\n\n- Some experts say a fever is a sign that your immune system is working and anything other than a very high fever should be left to run its course.\n- Others fear that fever may be damaging to your body and should be treated. Very high fever may damage body cells, especially brain cells.\n\nThere are no guidelines for when to treat a fever. Treatment may depend on the cause and other symptoms, but most experts agree that a very high fever should be treated.\n\n- The usual treatment for adults is an over-the-counter medicine such as [acetaminophen](https:\/\/www.drugs.com\/acetaminophen.html), [ibuprofen](https:\/\/www.drugs.com\/ibuprofen.html) or [aspirin](https:\/\/www.drugs.com\/aspirin.html). Rest and drinking lots of fluid are also recommended because fever can lead to fluid loss and dehydration.\n- The AAP recommends acetaminophen or ibuprofen, but not aspirin for treating fever in children. (Aspirin in children can raise the risk of a harmful condition called [Reye’s syndrome](https:\/\/www.drugs.com\/cg\/reye-syndrome.html).)\n  - For children over age 2, follow the label directions according to age or weight to give the right dose.\n  - For children under age 2, call your pharmacist or pediatrician to find the correct dose.\n  - Children should also drink fluids to avoid dehydration.\n  - Using ice packs or alcohol rubs to reduce fever is not recommended.\n## When to call your doctor for fever\nFor children, call the doctor if:\n\n- A child less than 3 months old has a fever over 38°C (100.4°F). Always call for any child with a fever 40°C (104°F) or higher.\n- A fever occurs with other symptoms, including headache, stiff neck, trouble breathing, rash, severe sore throat or ear pain, or persistent vomiting\n- A fever lasts more than 24 hours in a child under 2 years old\n- A fever causes a seizure\n- A fever lasts more than 3 days in a child over 2 years old\n\nFor adults and older children, call if a fever is 104°F (40°C) or higher or if there are symptoms that include seizure, stiff neck, confusion, trouble breathing or any severe pain.\n\nReferences\n\n1. **U.S. National Library of Medicine Bookshelf.** How is body temperature regulated and what is fever? InformedHealth.org. 2020. Available at: https:\/\/www.ncbi.nlm.nih.gov\/books\/NBK279457\/. \\[Accessed January 24, 2022\\].\n2. **U.S. National Library of Medicine Bookshelf.** Physiology of Fever. StatPearls. August 2021. Available at: https:\/\/www.ncbi.nlm.nih.gov\/books\/NBK562334\/. \\[Accessed January 24, 2022\\].\n3. **American Academy of Pediatrics (AAP).** Fever Without Fear. April 2016. Available at: https:\/\/www.healthychildren.org\/English\/health-issues\/conditions\/fever\/Pages\/Fever-Without-Fear.aspx. \\[Accessed January 24, 2022\\].\n4. **American Academy of Pediatrics (AAP).** How to take your child’s temperature. Available at: https:\/\/www.healthychildren.org\/English\/health-issues\/conditions\/fever\/Pages\/How-to-Take-a-Childs-Temperature.aspx. \\[Accessed January 24, 2022\\].\n5. **Wise J.** Rectal thermometer should be used for accurate temperature reading, analysis finds. BMJ 2015;351:h6125. https:\/\/www.bmj.com\/content\/351\/bmj.h6125.full\n6. **Geneva II,** Cuzzo B, Fazili T, Javaid W. Normal Body Temperature: A Systematic Review. Open Forum Infect Dis. 2019 Apr; 6(4): ofz032. https:\/\/dx.doi.org\/10.1093%2Fofid%2Fofz032.\n7. **Ray JJ,** Schulman CI. Fever: suppress it or let it ride? J Thorac Dis. 2015 Dec; 7(12): E633-E636. https:\/\/dx.doi.org\/10.3978%2Fj.issn.2072-1439.2015.12.28.\n8. **U.S. National Library of Medicine MedlinePlus.** Fever. December 2016. Available at: https:\/\/medlineplus.gov\/fever.html. \\[Accessed January 24, 2022\\].\n## Read next\n## How much Tylenol (acetaminophen) can you take in a day?\nFor most adults, the maximum daily dose of Tylenol is 4,000 mg. This amount might be lower depending on your past medical history.\n\n[Continue reading](https:\/\/www.drugs.com\/medical-answers\/how-tylenol-you-take-day-3578621\/)\n\n## Advil (ibuprofen) and Tylenol (acetaminophen) together?\nYes, it is safe to take Advil (ibuprofen) and Tylenol (acetaminophen) together if you need to for extra pain relief, such as for a dental extraction. This combination is more effective than taking either medication alone because they work through different mechanisms with minimal overlapping of side effects. But it is important to follow key safety guidelines.\n\n[Continue reading](https:\/\/www.drugs.com\/medical-answers\/safe-ibuprofen-with-acetaminophen-2991821\/)\n\n## What is paracetamol \/ Panadol called in the US?\nParacetamol is known as acetaminophen in the U.S. Acetaminophen relieves mild-to-moderate pain, headache and fever. It's available over-the-counter as brand names such as Tylenol, Mapap or Panadol, and also as generics and store-specific brands. There are no differences in the chemical or therapeutics uses of acetaminophen and paracetamol, although recommended doses or available products may differ between countries.\n\n[Continue reading](https:\/\/www.drugs.com\/medical-answers\/paracetamol-usa-3555654\/)\n## See also:\n### [Celebrex](https:\/\/www.drugs.com\/celebrex.html)\nCelebrex is a nonsteroidal anti-inflammatory drug used to treat pain or inflammation. Learn about ...\n\n**Reviews & ratings**\n\n7\\.0 \/ 10\n\n[229 Reviews](https:\/\/www.drugs.com\/comments\/celecoxib\/celebrex.html)\n\n[View more](https:\/\/www.drugs.com\/celebrex.html)\n\n### [Botox](https:\/\/www.drugs.com\/botox.html)\nLearn how Botox works, what it costs, how long results last, and possible side effects ...\n\n**Reviews & ratings**\n\n5\\.8 \/ 10\n\n[503 Reviews](https:\/\/www.drugs.com\/comments\/onabotulinumtoxina\/botox.html)\n\n[View more](https:\/\/www.drugs.com\/botox.html)\n\nFeatured\n\n### [Foundayo](https:\/\/www.drugs.com\/foundayo.html)\nFoundayo is used for weight loss (obesity\/overweight)\n\n**Reviews & ratings**\n\n[1 Review](https:\/\/www.drugs.com\/comments\/orforglipron\/foundayo.html)\n\n[View more](https:\/\/www.drugs.com\/foundayo.html)\n\n### [Verapamil](https:\/\/www.drugs.com\/verapamil.html)\nVerapamil is used to treat hypertension (high blood pressure), angina (chest pain), and certain ...\n\n**Reviews & ratings**\n\n7\\.5 \/ 10\n\n[186 Reviews](https:\/\/www.drugs.com\/comments\/verapamil\/)\n\n[View more](https:\/\/www.drugs.com\/verapamil.html)\n\n### [Sumatriptan](https:\/\/www.drugs.com\/sumatriptan.html)\nSumatriptan is a prescription medicine used to treat acute migraine headaches and cluster ...\n\n**Reviews & ratings**\n\n7\\.7 \/ 10\n\n[553 Reviews](https:\/\/www.drugs.com\/comments\/sumatriptan\/)\n\n[View more](https:\/\/www.drugs.com\/sumatriptan.html)\n\n### [Celecoxib](https:\/\/www.drugs.com\/celecoxib.html)\nCelecoxib is a nonsteroidal anti-inflammatory drug (NSAID) used to treat pain or inflammation ...\n\n**Reviews & ratings**\n\n6\\.9 \/ 10\n\n[289 Reviews](https:\/\/www.drugs.com\/comments\/celecoxib\/)\n\n[View more](https:\/\/www.drugs.com\/celecoxib.html)\n\n### [Metoclopramide](https:\/\/www.drugs.com\/metoclopramide.html)\nMetoclopramide is used short-term to treat heartburn caused by gastroesophageal reflux. Learn about ...\n\n**Reviews & ratings**\n\n3\\.9 \/ 10\n\n[525 Reviews](https:\/\/www.drugs.com\/comments\/metoclopramide\/)\n\n[View more](https:\/\/www.drugs.com\/metoclopramide.html)\n\n### [Diclofenac](https:\/\/www.drugs.com\/diclofenac.html)\nDiclofenac is a nonsteroidal anti-inflammatory drug used to treat pain and inflammation associated ...\n\n**Reviews & ratings**\n\n7\\.3 \/ 10\n\n[712 Reviews](https:\/\/www.drugs.com\/comments\/diclofenac\/)\n\n[View more](https:\/\/www.drugs.com\/diclofenac.html)\n\n### [Amitriptyline](https:\/\/www.drugs.com\/amitriptyline.html)\nAmitriptyline is a tricyclic antidepressant used to treat depression and, off-label, conditions ...\n\n**Reviews & ratings**\n\n7\\.5 \/ 10\n\n[1,829 Reviews](https:\/\/www.drugs.com\/comments\/amitriptyline\/)\n\n[View more](https:\/\/www.drugs.com\/amitriptyline.html)\n\n### [Propranolol](https:\/\/www.drugs.com\/propranolol.html)\nPropranolol is a beta-blocker that is used to treat tremors, chest pain, high blood pressure, heart ...\n\n**Reviews & ratings**\n\n8\\.2 \/ 10\n\n[1,402 Reviews](https:\/\/www.drugs.com\/comments\/propranolol\/)\n\n[View more](https:\/\/www.drugs.com\/propranolol.html)\n### Related medical questions\n- [Acetaminophen vs Ibuprofen: Which is better?](https:\/\/www.drugs.com\/medical-answers\/difference-between-ibuprofen-acetaminophen-3016163\/)\n- [What medications cause liver enzymes to be elevated?](https:\/\/www.drugs.com\/medical-answers\/medications-liver-enzymes-elevated-3566419\/)\n- [Is it safe to take acetaminophen every day?](https:\/\/www.drugs.com\/medical-answers\/safe-acetaminophen-every-day-3564969\/)\n- [What cold medicine can you take with diabetes?](https:\/\/www.drugs.com\/medical-answers\/cold-medicine-you-diabetes-3564910\/)\n- [How Long Does Tylenol Take to Start Working?](https:\/\/www.drugs.com\/medical-answers\/how-long-for-tylenol-start-work-513549\/)\n- [How long does Percocet stay in your system?](https:\/\/www.drugs.com\/medical-answers\/long-percocet-stay-system-3572644\/)\n- [Does Mucinex help with Covid?](https:\/\/www.drugs.com\/medical-answers\/mucinex-help-covid-3574704\/)\n- [Is Tylenol (acetaminophen) a blood thinner?](https:\/\/www.drugs.com\/medical-answers\/is-acetaminophen-a-blood-thinner-14420\/)\n- [Can you Double up on Pain Meds? Safe Painkiller Combinations](https:\/\/www.drugs.com\/medical-answers\/you-double-pain-killers-3571237\/)\n- [Is acetaminophen (Tylenol) an NSAID Drug?](https:\/\/www.drugs.com\/medical-answers\/acetaminophen-nsaid-938122\/)\n- [Which painkiller should you use?](https:\/\/www.drugs.com\/medical-answers\/which-painkiller-should-you-use-3561205\/)\n- [How can I treat a migraine at home safely?](https:\/\/www.drugs.com\/medical-answers\/how-treat-migraine-home-safely-3581200\/)\n- [Can I take Tylenol while pregnant?](https:\/\/www.drugs.com\/medical-answers\/tylenol-pregnant-3002126\/)\n- [Cold, flu, hay fever, or COVID - Which one do I have?](https:\/\/www.drugs.com\/medical-answers\/cold-flu-hay-fever-covid-19-compare-symptoms-3536420\/)\n- [Is acetaminophen the same as Tylenol?](https:\/\/www.drugs.com\/medical-answers\/acetaminophen-tylenol-3002135\/)\n- [Can you take paracetamol (acetaminophen) with 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home?](https:\/\/www.drugs.com\/insights\/treating-mild-cases-covid-19-home-3571321\/)\n- [How Can I Treat Muscle Strain or Pain?](https:\/\/www.drugs.com\/insights\/treat-muscle-strain-pain-3575654\/)\n### Drug information\n- [Acetaminophen](https:\/\/www.drugs.com\/acetaminophen.html) ([117 reviews](https:\/\/www.drugs.com\/comments\/acetaminophen\/))\n- [Ibuprofen](https:\/\/www.drugs.com\/ibuprofen.html) ([245 reviews](https:\/\/www.drugs.com\/comments\/ibuprofen\/))\n- [Aspirin](https:\/\/www.drugs.com\/aspirin.html) ([53 reviews](https:\/\/www.drugs.com\/comments\/aspirin\/))\n- [Paracetamol](https:\/\/www.drugs.com\/paracetamol.html) ([16 reviews](https:\/\/www.drugs.com\/comments\/acetaminophen\/paracetamol.html))\n### Related support groups\n- [Acetaminophen](https:\/\/www.drugs.com\/answers\/support-group\/acetaminophen\/) (166 questions, 218 members)\n- [Ibuprofen](https:\/\/www.drugs.com\/answers\/support-group\/ibuprofen\/) (268 questions, 243 members)\n- 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All rights reserved.","attrs_readable_markdown":"**Official Answer** by Drugs.com\n\n**A fever is defined as a body temperature of 38°C (100.4°F) or higher.** Normal body temperature is usually 37°C (98.6°F), although it can be about a half degree Celsius higher or lower for some people and that’s normal for them.\n\nA fever occurs when your brain sets your body temperature higher than normal. Normal body temperature can change during the day based on activity level, hormone levels and whether you are sleeping or awake.\n\nYour normal body temperature is regulated or set by an area of your brain called your hypothalamus. Fever occurs when your body’s defense system — your immune system — reacts to an infection or illness, triggering your brain to raise your body temperature. This helps your immune system fight off the illness or infection, but a very high temperature can be dangerous.\n\nFever is not the same as hyperthermia, which means your body temperature goes up due to the outside temperature. Hyperthermia is not caused by your brain and immune system. An example would be heat stroke.\n\n## Fever grades in adults\nIn an adult, a fever may be elevated, high or very high:\n\n- An elevated body temperature is between 37.5°C and 38°C (99.5°F to 100.4°F).\n- A fever is 38°C to 39.5°C (100.4°F to 103.1°F).\n- A high fever is 39.5°C (103.1°F).\n- A very high fever is above 41°C (105.8°F ).\n## Fever in babies and children\nAccording to the American Academy of Pediatrics (AAP), normal temperature in children varies with a child’s age, time of day and level of activity.\n\nFever is defined as a temperature of 38°C (100.4°F).\n\n- A fever that requires a call to the pediatrician right away would be 38°C (100.4°F) or higher for a baby under 3 months old.\n- A fever above 40°C (104°F) requires a call to the doctor at any age.\n## How to measure fever\nTo take your temperature, a digital thermometer is recommended instead of a mercury thermometer, especially in children, because mercury from a broken thermometer may be toxic.  \n There are three types of digital thermometers. There are many variations, so it is important to read and follow the thermometer instructions carefully. They all must be turned on and they will beep to tell you when to read them:\n\n- A digital multi-use thermometer can be used to take a rectal, oral (mouth) or axillary (armpit) temperature in adults and children. In general, oral and armpit temperatures have not shown to be as accurate as rectal. Oral use is not recommended for children under age 4, according to the AAP, and AAP notes that rectal use is best, especially for infants and children under 3 months. Always clean the thermometer before and after use, and do not use a thermometer orally that has been used rectally. Do not take an oral temperature for 30 minutes after a hot or cold drink.\n- A temporal or forehead artery thermometer reads your temperature from a blood vessel under the skin of your temple or forehead. You will need to check the instructions to find out how far away from your skin to hold it. If you have been in hot or cold temperatures, you should adjust to normal temperature before taking a reading.\n- A tympanic digital thermometer measures heat inside your ear canal. This type can be used for anyone except babies.\n## Related questions\n- [Can You Take Tramadol with Acetaminophen, Ibuprofen, or Aspirin?](https:\/\/www.drugs.com\/medical-answers\/you-tramadol-acetaminophen-ibuprofen-aspirin-3571039\/)\n- [Acetaminophen vs paracetamol: What do you need to know?](https:\/\/www.drugs.com\/medical-answers\/acetaminophen-paracetamol-what-you-need-3576567\/)\n- [What's the best medicine for sore throat?](https:\/\/www.drugs.com\/medical-answers\/good-medicine-severe-sore-throat-612310\/)\n## When and how to treat a fever\nSince ancient times, fevers have been associated with illness. It was not until the invention of the thermometer that normal temperature and fever temperatures were defined. Over time, the definitions have gone up and down slightly.\n\nAt this time, there is a debate on when to treat a fever.\n\n- Some experts say a fever is a sign that your immune system is working and anything other than a very high fever should be left to run its course.\n- Others fear that fever may be damaging to your body and should be treated. Very high fever may damage body cells, especially brain cells.\n\nThere are no guidelines for when to treat a fever. Treatment may depend on the cause and other symptoms, but most experts agree that a very high fever should be treated.\n\n- The usual treatment for adults is an over-the-counter medicine such as [acetaminophen](https:\/\/www.drugs.com\/acetaminophen.html), [ibuprofen](https:\/\/www.drugs.com\/ibuprofen.html) or [aspirin](https:\/\/www.drugs.com\/aspirin.html). Rest and drinking lots of fluid are also recommended because fever can lead to fluid loss and dehydration.\n- The AAP recommends acetaminophen or ibuprofen, but not aspirin for treating fever in children. (Aspirin in children can raise the risk of a harmful condition called [Reye’s syndrome](https:\/\/www.drugs.com\/cg\/reye-syndrome.html).)\n  - For children over age 2, follow the label directions according to age or weight to give the right dose.\n  - For children under age 2, call your pharmacist or pediatrician to find the correct dose.\n  - Children should also drink fluids to avoid dehydration.\n  - Using ice packs or alcohol rubs to reduce fever is not recommended.\n## When to call your doctor for fever\nFor children, call the doctor if:\n\n- A child less than 3 months old has a fever over 38°C (100.4°F). Always call for any child with a fever 40°C (104°F) or higher.\n- A fever occurs with other symptoms, including headache, stiff neck, trouble breathing, rash, severe sore throat or ear pain, or persistent vomiting\n- A fever lasts more than 24 hours in a child under 2 years old\n- A fever causes a seizure\n- A fever lasts more than 3 days in a child over 2 years old\n\nFor adults and older children, call if a fever is 104°F (40°C) or higher or if there are symptoms that include seizure, stiff neck, confusion, trouble breathing or any severe pain.\n\nReferences\n\n1. **U.S. National Library of Medicine Bookshelf.** How is body temperature regulated and what is fever? InformedHealth.org. 2020. Available at: https:\/\/www.ncbi.nlm.nih.gov\/books\/NBK279457\/. \\[Accessed January 24, 2022\\].\n2. **U.S. National Library of Medicine Bookshelf.** Physiology of Fever. StatPearls. August 2021. Available at: https:\/\/www.ncbi.nlm.nih.gov\/books\/NBK562334\/. \\[Accessed January 24, 2022\\].\n3. **American Academy of Pediatrics (AAP).** Fever Without Fear. April 2016. Available at: https:\/\/www.healthychildren.org\/English\/health-issues\/conditions\/fever\/Pages\/Fever-Without-Fear.aspx. \\[Accessed January 24, 2022\\].\n4. **American Academy of Pediatrics (AAP).** How to take your child’s temperature. Available at: https:\/\/www.healthychildren.org\/English\/health-issues\/conditions\/fever\/Pages\/How-to-Take-a-Childs-Temperature.aspx. \\[Accessed January 24, 2022\\].\n5. **Wise J.** Rectal thermometer should be used for accurate temperature reading, analysis finds. BMJ 2015;351:h6125. https:\/\/www.bmj.com\/content\/351\/bmj.h6125.full\n6. **Geneva II,** Cuzzo B, Fazili T, Javaid W. Normal Body Temperature: A Systematic Review. Open Forum Infect Dis. 2019 Apr; 6(4): ofz032. https:\/\/dx.doi.org\/10.1093%2Fofid%2Fofz032.\n7. **Ray JJ,** Schulman CI. Fever: suppress it or let it ride? J Thorac Dis. 2015 Dec; 7(12): E633-E636. https:\/\/dx.doi.org\/10.3978%2Fj.issn.2072-1439.2015.12.28.\n8. **U.S. National Library of Medicine MedlinePlus.** Fever. December 2016. Available at: https:\/\/medlineplus.gov\/fever.html. \\[Accessed January 24, 2022\\].\n## Read next\n## How much Tylenol (acetaminophen) can you take in a day?\nFor most adults, the maximum daily dose of Tylenol is 4,000 mg. This amount might be lower depending on your past medical history.\n\n[Continue reading](https:\/\/www.drugs.com\/medical-answers\/how-tylenol-you-take-day-3578621\/)\n\n## Advil (ibuprofen) and Tylenol (acetaminophen) together?\nYes, it is safe to take Advil (ibuprofen) and Tylenol (acetaminophen) together if you need to for extra pain relief, such as for a dental extraction. This combination is more effective than taking either medication alone because they work through different mechanisms with minimal overlapping of side effects. But it is important to follow key safety guidelines.\n\n[Continue reading](https:\/\/www.drugs.com\/medical-answers\/safe-ibuprofen-with-acetaminophen-2991821\/)\n\n## What is paracetamol \/ Panadol called in the US?\nParacetamol is known as acetaminophen in the U.S. Acetaminophen relieves mild-to-moderate pain, headache and fever. It's available over-the-counter as brand names such as Tylenol, Mapap or Panadol, and also as generics and store-specific brands. There are no differences in the chemical or therapeutics uses of acetaminophen and paracetamol, although recommended doses or available products may differ between countries.\n\n[Continue reading](https:\/\/www.drugs.com\/medical-answers\/paracetamol-usa-3555654\/)\n## See also:\n### Related medical questions\n- [Acetaminophen vs Ibuprofen: Which is better?](https:\/\/www.drugs.com\/medical-answers\/difference-between-ibuprofen-acetaminophen-3016163\/)\n- [What medications cause liver enzymes to be elevated?](https:\/\/www.drugs.com\/medical-answers\/medications-liver-enzymes-elevated-3566419\/)\n- [Is it safe to take acetaminophen every day?](https:\/\/www.drugs.com\/medical-answers\/safe-acetaminophen-every-day-3564969\/)\n- [What cold medicine can you take with diabetes?](https:\/\/www.drugs.com\/medical-answers\/cold-medicine-you-diabetes-3564910\/)\n- [How Long Does Tylenol Take to Start Working?](https:\/\/www.drugs.com\/medical-answers\/how-long-for-tylenol-start-work-513549\/)\n- [How long does Percocet stay in your system?](https:\/\/www.drugs.com\/medical-answers\/long-percocet-stay-system-3572644\/)\n- [Does Mucinex help with Covid?](https:\/\/www.drugs.com\/medical-answers\/mucinex-help-covid-3574704\/)\n- [Is Tylenol (acetaminophen) a blood thinner?](https:\/\/www.drugs.com\/medical-answers\/is-acetaminophen-a-blood-thinner-14420\/)\n- [Can you Double up on Pain Meds? Safe Painkiller Combinations](https:\/\/www.drugs.com\/medical-answers\/you-double-pain-killers-3571237\/)\n- [Is acetaminophen (Tylenol) an NSAID Drug?](https:\/\/www.drugs.com\/medical-answers\/acetaminophen-nsaid-938122\/)\n- [Which painkiller should you use?](https:\/\/www.drugs.com\/medical-answers\/which-painkiller-should-you-use-3561205\/)\n- [How can I treat a migraine at home safely?](https:\/\/www.drugs.com\/medical-answers\/how-treat-migraine-home-safely-3581200\/)\n- [Can I take Tylenol while pregnant?](https:\/\/www.drugs.com\/medical-answers\/tylenol-pregnant-3002126\/)\n- [Cold, flu, hay fever, or COVID - Which one do I have?](https:\/\/www.drugs.com\/medical-answers\/cold-flu-hay-fever-covid-19-compare-symptoms-3536420\/)\n- [Is acetaminophen the same as Tylenol?](https:\/\/www.drugs.com\/medical-answers\/acetaminophen-tylenol-3002135\/)\n- [Can you take paracetamol (acetaminophen) with antibiotics?](https:\/\/www.drugs.com\/medical-answers\/take-paracetamol-acetaminophen-antibiotics-3121720\/)\n- [What do I need to know about Drug Interactions?](https:\/\/www.drugs.com\/insights\/drug-interactions-3574864\/)\n- [Can I give my dog or cat Tylenol (acetaminophen)?](https:\/\/www.drugs.com\/medical-answers\/give-dog-cat-tylenol-3002128\/)\n- [Is Tylenol (acetaminophen) an anti-inflammatory drug?](https:\/\/www.drugs.com\/medical-answers\/tylenol-anti-inflammatory-drug-3002130\/)\n- [Over the Counter Medication for Pets](https:\/\/www.drugs.com\/insights\/over-counter-medication-pets-3575658\/)\n- [How do I treat back pain without using opioids?](https:\/\/www.drugs.com\/insights\/treating-back-pain-opioids-3571193\/)\n- [What antibiotics are used to treat bronchitis?](https:\/\/www.drugs.com\/medical-answers\/antibiotics-treat-bronchitis-3121709\/)\n- [How do I treat a mild case of COVID-19 at home?](https:\/\/www.drugs.com\/insights\/treating-mild-cases-covid-19-home-3571321\/)\n- [How Can I Treat Muscle Strain or Pain?](https:\/\/www.drugs.com\/insights\/treat-muscle-strain-pain-3575654\/)\n### Drug information\n- [Acetaminophen](https:\/\/www.drugs.com\/acetaminophen.html) ([117 reviews](https:\/\/www.drugs.com\/comments\/acetaminophen\/))\n- [Ibuprofen](https:\/\/www.drugs.com\/ibuprofen.html) ([245 reviews](https:\/\/www.drugs.com\/comments\/ibuprofen\/))\n- [Aspirin](https:\/\/www.drugs.com\/aspirin.html) ([53 reviews](https:\/\/www.drugs.com\/comments\/aspirin\/))\n- [Paracetamol](https:\/\/www.drugs.com\/paracetamol.html) ([16 reviews](https:\/\/www.drugs.com\/comments\/acetaminophen\/paracetamol.html))\n### Related support groups\n- [Acetaminophen](https:\/\/www.drugs.com\/answers\/support-group\/acetaminophen\/) (166 questions, 218 members)\n- [Ibuprofen](https:\/\/www.drugs.com\/answers\/support-group\/ibuprofen\/) (268 questions, 243 members)\n- [Aspirin](https:\/\/www.drugs.com\/answers\/support-group\/aspirin\/) (148 questions, 235 members)\n- [Paracetamol](https:\/\/www.drugs.com\/answers\/support-group\/paracetamol\/) (38 questions, 76 members)\n- [Fever](https:\/\/www.drugs.com\/answers\/support-group\/fever\/) (108 questions, 179 members)\n\n[Medical Disclaimer](https:\/\/www.drugs.com\/support\/disclaimer.html)","meta_canonical":null}

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Meta Title	What temperature is considered a fever?
Meta Description	Official answer: A fever is defined as a body temperature of 38°C (100.4°F) or higher. Normal body temperature is usually...
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Boilerpipe Text	Official Answer by Drugs.com A fever is defined as a body temperature of 38°C (100.4°F) or higher. Normal body temperature is usually 37°C (98.6°F), although it can be about a half degree Celsius higher or lower for some people and that’s normal for them. A fever occurs when your brain sets your body temperature higher than normal. Normal body temperature can change during the day based on activity level, hormone levels and whether you are sleeping or awake. Your normal body temperature is regulated or set by an area of your brain called your hypothalamus. Fever occurs when your body’s defense system — your immune system — reacts to an infection or illness, triggering your brain to raise your body temperature. This helps your immune system fight off the illness or infection, but a very high temperature can be dangerous. Fever is not the same as hyperthermia, which means your body temperature goes up due to the outside temperature. Hyperthermia is not caused by your brain and immune system. An example would be heat stroke. Fever grades in adults In an adult, a fever may be elevated, high or very high: An elevated body temperature is between 37.5°C and 38°C (99.5°F to 100.4°F). A fever is 38°C to 39.5°C (100.4°F to 103.1°F). A high fever is 39.5°C (103.1°F). A very high fever is above 41°C (105.8°F ). Fever in babies and children According to the American Academy of Pediatrics (AAP), normal temperature in children varies with a child’s age, time of day and level of activity. Fever is defined as a temperature of 38°C (100.4°F). A fever that requires a call to the pediatrician right away would be 38°C (100.4°F) or higher for a baby under 3 months old. A fever above 40°C (104°F) requires a call to the doctor at any age. How to measure fever To take your temperature, a digital thermometer is recommended instead of a mercury thermometer, especially in children, because mercury from a broken thermometer may be toxic. There are three types of digital thermometers. There are many variations, so it is important to read and follow the thermometer instructions carefully. They all must be turned on and they will beep to tell you when to read them: A digital multi-use thermometer can be used to take a rectal, oral (mouth) or axillary (armpit) temperature in adults and children. In general, oral and armpit temperatures have not shown to be as accurate as rectal. Oral use is not recommended for children under age 4, according to the AAP, and AAP notes that rectal use is best, especially for infants and children under 3 months. Always clean the thermometer before and after use, and do not use a thermometer orally that has been used rectally. Do not take an oral temperature for 30 minutes after a hot or cold drink. A temporal or forehead artery thermometer reads your temperature from a blood vessel under the skin of your temple or forehead. You will need to check the instructions to find out how far away from your skin to hold it. If you have been in hot or cold temperatures, you should adjust to normal temperature before taking a reading. A tympanic digital thermometer measures heat inside your ear canal. This type can be used for anyone except babies. Related questions Can You Take Tramadol with Acetaminophen, Ibuprofen, or Aspirin? Acetaminophen vs paracetamol: What do you need to know? What's the best medicine for sore throat? When and how to treat a fever Since ancient times, fevers have been associated with illness. It was not until the invention of the thermometer that normal temperature and fever temperatures were defined. Over time, the definitions have gone up and down slightly. At this time, there is a debate on when to treat a fever. Some experts say a fever is a sign that your immune system is working and anything other than a very high fever should be left to run its course. Others fear that fever may be damaging to your body and should be treated. Very high fever may damage body cells, especially brain cells. There are no guidelines for when to treat a fever. Treatment may depend on the cause and other symptoms, but most experts agree that a very high fever should be treated. The usual treatment for adults is an over-the-counter medicine such as acetaminophen , ibuprofen or aspirin . Rest and drinking lots of fluid are also recommended because fever can lead to fluid loss and dehydration. The AAP recommends acetaminophen or ibuprofen, but not aspirin for treating fever in children. (Aspirin in children can raise the risk of a harmful condition called Reye’s syndrome .) For children over age 2, follow the label directions according to age or weight to give the right dose. For children under age 2, call your pharmacist or pediatrician to find the correct dose. Children should also drink fluids to avoid dehydration. Using ice packs or alcohol rubs to reduce fever is not recommended. When to call your doctor for fever For children, call the doctor if: A child less than 3 months old has a fever over 38°C (100.4°F). Always call for any child with a fever 40°C (104°F) or higher. A fever occurs with other symptoms, including headache, stiff neck, trouble breathing, rash, severe sore throat or ear pain, or persistent vomiting A fever lasts more than 24 hours in a child under 2 years old A fever causes a seizure A fever lasts more than 3 days in a child over 2 years old For adults and older children, call if a fever is 104°F (40°C) or higher or if there are symptoms that include seizure, stiff neck, confusion, trouble breathing or any severe pain. References U.S. National Library of Medicine Bookshelf. How is body temperature regulated and what is fever? InformedHealth.org. 2020. Available at: https://www.ncbi.nlm.nih.gov/books/NBK279457/. [Accessed January 24, 2022]. U.S. National Library of Medicine Bookshelf. Physiology of Fever. StatPearls. August 2021. Available at: https://www.ncbi.nlm.nih.gov/books/NBK562334/. [Accessed January 24, 2022]. American Academy of Pediatrics (AAP). Fever Without Fear. April 2016. Available at: https://www.healthychildren.org/English/health-issues/conditions/fever/Pages/Fever-Without-Fear.aspx. [Accessed January 24, 2022]. American Academy of Pediatrics (AAP). How to take your child’s temperature. Available at: https://www.healthychildren.org/English/health-issues/conditions/fever/Pages/How-to-Take-a-Childs-Temperature.aspx. [Accessed January 24, 2022]. Wise J. Rectal thermometer should be used for accurate temperature reading, analysis finds. BMJ 2015;351:h6125. https://www.bmj.com/content/351/bmj.h6125.full Geneva II, Cuzzo B, Fazili T, Javaid W. Normal Body Temperature: A Systematic Review. Open Forum Infect Dis. 2019 Apr; 6(4): ofz032. https://dx.doi.org/10.1093%2Fofid%2Fofz032. Ray JJ, Schulman CI. Fever: suppress it or let it ride? J Thorac Dis. 2015 Dec; 7(12): E633-E636. https://dx.doi.org/10.3978%2Fj.issn.2072-1439.2015.12.28. U.S. National Library of Medicine MedlinePlus. Fever. December 2016. Available at: https://medlineplus.gov/fever.html. [Accessed January 24, 2022]. Read next How much Tylenol (acetaminophen) can you take in a day? For most adults, the maximum daily dose of Tylenol is 4,000 mg. This amount might be lower depending on your past medical history. Continue reading Advil (ibuprofen) and Tylenol (acetaminophen) together? Yes, it is safe to take Advil (ibuprofen) and Tylenol (acetaminophen) together if you need to for extra pain relief, such as for a dental extraction. This combination is more effective than taking either medication alone because they work through different mechanisms with minimal overlapping of side effects. But it is important to follow key safety guidelines. Continue reading What is paracetamol / Panadol called in the US? Paracetamol is known as acetaminophen in the U.S. Acetaminophen relieves mild-to-moderate pain, headache and fever. It's available over-the-counter as brand names such as Tylenol, Mapap or Panadol, and also as generics and store-specific brands. There are no differences in the chemical or therapeutics uses of acetaminophen and paracetamol, although recommended doses or available products may differ between countries. Continue reading See also: Related medical questions Acetaminophen vs Ibuprofen: Which is better? What medications cause liver enzymes to be elevated? Is it safe to take acetaminophen every day? What cold medicine can you take with diabetes? How Long Does Tylenol Take to Start Working? How long does Percocet stay in your system? Does Mucinex help with Covid? Is Tylenol (acetaminophen) a blood thinner? Can you Double up on Pain Meds? Safe Painkiller Combinations Is acetaminophen (Tylenol) an NSAID Drug? Which painkiller should you use? How can I treat a migraine at home safely? Can I take Tylenol while pregnant? Cold, flu, hay fever, or COVID - Which one do I have? Is acetaminophen the same as Tylenol? Can you take paracetamol (acetaminophen) with antibiotics? What do I need to know about Drug Interactions? Can I give my dog or cat Tylenol (acetaminophen)? Is Tylenol (acetaminophen) an anti-inflammatory drug? Over the Counter Medication for Pets How do I treat back pain without using opioids? What antibiotics are used to treat bronchitis? How do I treat a mild case of COVID-19 at home? How Can I Treat Muscle Strain or Pain? Drug information Acetaminophen ( 117 reviews ) Ibuprofen ( 245 reviews ) Aspirin ( 53 reviews ) Paracetamol ( 16 reviews ) Related support groups Acetaminophen (166 questions, 218 members) Ibuprofen (268 questions, 243 members) Aspirin (148 questions, 235 members) Paracetamol (38 questions, 76 members) Fever (108 questions, 179 members) Medical Disclaimer
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[Home](https://www.drugs.com/) 2. [Medical Answers](https://www.drugs.com/medical-answers/) # What temperature is considered a fever? Medically reviewed by [Sally Chao, MD](https://www.drugs.com/support/editor/32/sally-chao-md.html). Last updated on Jan 20, 2025. Official Answer by Drugs.com A fever is defined as a body temperature of 38°C (100.4°F) or higher. Normal body temperature is usually 37°C (98.6°F), although it can be about a half degree Celsius higher or lower for some people and that’s normal for them. A fever occurs when your brain sets your body temperature higher than normal. Normal body temperature can change during the day based on activity level, hormone levels and whether you are sleeping or awake. Your normal body temperature is regulated or set by an area of your brain called your hypothalamus. Fever occurs when your body’s defense system — your immune system — reacts to an infection or illness, triggering your brain to raise your body temperature. This helps your immune system fight off the illness or infection, but a very high temperature can be dangerous. Fever is not the same as hyperthermia, which means your body temperature goes up due to the outside temperature. Hyperthermia is not caused by your brain and immune system. An example would be heat stroke. ## Fever grades in adults In an adult, a fever may be elevated, high or very high: - An elevated body temperature is between 37.5°C and 38°C (99.5°F to 100.4°F). - A fever is 38°C to 39.5°C (100.4°F to 103.1°F). - A high fever is 39.5°C (103.1°F). - A very high fever is above 41°C (105.8°F ). ## Fever in babies and children According to the American Academy of Pediatrics (AAP), normal temperature in children varies with a child’s age, time of day and level of activity. Fever is defined as a temperature of 38°C (100.4°F). - A fever that requires a call to the pediatrician right away would be 38°C (100.4°F) or higher for a baby under 3 months old. - A fever above 40°C (104°F) requires a call to the doctor at any age. ## How to measure fever To take your temperature, a digital thermometer is recommended instead of a mercury thermometer, especially in children, because mercury from a broken thermometer may be toxic. There are three types of digital thermometers. There are many variations, so it is important to read and follow the thermometer instructions carefully. They all must be turned on and they will beep to tell you when to read them: - A digital multi-use thermometer can be used to take a rectal, oral (mouth) or axillary (armpit) temperature in adults and children. In general, oral and armpit temperatures have not shown to be as accurate as rectal. Oral use is not recommended for children under age 4, according to the AAP, and AAP notes that rectal use is best, especially for infants and children under 3 months. Always clean the thermometer before and after use, and do not use a thermometer orally that has been used rectally. Do not take an oral temperature for 30 minutes after a hot or cold drink. - A temporal or forehead artery thermometer reads your temperature from a blood vessel under the skin of your temple or forehead. You will need to check the instructions to find out how far away from your skin to hold it. If you have been in hot or cold temperatures, you should adjust to normal temperature before taking a reading. - A tympanic digital thermometer measures heat inside your ear canal. This type can be used for anyone except babies. ## Related questions - [Can You Take Tramadol with Acetaminophen, Ibuprofen, or Aspirin?](https://www.drugs.com/medical-answers/you-tramadol-acetaminophen-ibuprofen-aspirin-3571039/) - [Acetaminophen vs paracetamol: What do you need to know?](https://www.drugs.com/medical-answers/acetaminophen-paracetamol-what-you-need-3576567/) - [What's the best medicine for sore throat?](https://www.drugs.com/medical-answers/good-medicine-severe-sore-throat-612310/) ## When and how to treat a fever Since ancient times, fevers have been associated with illness. It was not until the invention of the thermometer that normal temperature and fever temperatures were defined. Over time, the definitions have gone up and down slightly. At this time, there is a debate on when to treat a fever. - Some experts say a fever is a sign that your immune system is working and anything other than a very high fever should be left to run its course. - Others fear that fever may be damaging to your body and should be treated. Very high fever may damage body cells, especially brain cells. There are no guidelines for when to treat a fever. Treatment may depend on the cause and other symptoms, but most experts agree that a very high fever should be treated. - The usual treatment for adults is an over-the-counter medicine such as [acetaminophen](https://www.drugs.com/acetaminophen.html), [ibuprofen](https://www.drugs.com/ibuprofen.html) or [aspirin](https://www.drugs.com/aspirin.html). Rest and drinking lots of fluid are also recommended because fever can lead to fluid loss and dehydration. - The AAP recommends acetaminophen or ibuprofen, but not aspirin for treating fever in children. (Aspirin in children can raise the risk of a harmful condition called [Reye’s syndrome](https://www.drugs.com/cg/reye-syndrome.html).) - For children over age 2, follow the label directions according to age or weight to give the right dose. - For children under age 2, call your pharmacist or pediatrician to find the correct dose. - Children should also drink fluids to avoid dehydration. - Using ice packs or alcohol rubs to reduce fever is not recommended. ## When to call your doctor for fever For children, call the doctor if: - A child less than 3 months old has a fever over 38°C (100.4°F). Always call for any child with a fever 40°C (104°F) or higher. - A fever occurs with other symptoms, including headache, stiff neck, trouble breathing, rash, severe sore throat or ear pain, or persistent vomiting - A fever lasts more than 24 hours in a child under 2 years old - A fever causes a seizure - A fever lasts more than 3 days in a child over 2 years old For adults and older children, call if a fever is 104°F (40°C) or higher or if there are symptoms that include seizure, stiff neck, confusion, trouble breathing or any severe pain. References 1. U.S. National Library of Medicine Bookshelf. How is body temperature regulated and what is fever? InformedHealth.org. 2020. Available at: https://www.ncbi.nlm.nih.gov/books/NBK279457/. \[Accessed January 24, 2022\]. 2. U.S. National Library of Medicine Bookshelf. Physiology of Fever. StatPearls. August 2021. Available at: https://www.ncbi.nlm.nih.gov/books/NBK562334/. \[Accessed January 24, 2022\]. 3. American Academy of Pediatrics (AAP). Fever Without Fear. April 2016. Available at: https://www.healthychildren.org/English/health-issues/conditions/fever/Pages/Fever-Without-Fear.aspx. \[Accessed January 24, 2022\]. 4. American Academy of Pediatrics (AAP). How to take your child’s temperature. Available at: https://www.healthychildren.org/English/health-issues/conditions/fever/Pages/How-to-Take-a-Childs-Temperature.aspx. \[Accessed January 24, 2022\]. 5. Wise J. Rectal thermometer should be used for accurate temperature reading, analysis finds. BMJ 2015;351:h6125. https://www.bmj.com/content/351/bmj.h6125.full 6. Geneva II, Cuzzo B, Fazili T, Javaid W. Normal Body Temperature: A Systematic Review. Open Forum Infect Dis. 2019 Apr; 6(4): ofz032. https://dx.doi.org/10.1093%2Fofid%2Fofz032. 7. Ray JJ, Schulman CI. Fever: suppress it or let it ride? J Thorac Dis. 2015 Dec; 7(12): E633-E636. https://dx.doi.org/10.3978%2Fj.issn.2072-1439.2015.12.28. 8. U.S. National Library of Medicine MedlinePlus. Fever. December 2016. Available at: https://medlineplus.gov/fever.html. \[Accessed January 24, 2022\]. ## Read next ## How much Tylenol (acetaminophen) can you take in a day? For most adults, the maximum daily dose of Tylenol is 4,000 mg. This amount might be lower depending on your past medical history. [Continue reading](https://www.drugs.com/medical-answers/how-tylenol-you-take-day-3578621/) ## Advil (ibuprofen) and Tylenol (acetaminophen) together? Yes, it is safe to take Advil (ibuprofen) and Tylenol (acetaminophen) together if you need to for extra pain relief, such as for a dental extraction. This combination is more effective than taking either medication alone because they work through different mechanisms with minimal overlapping of side effects. But it is important to follow key safety guidelines. [Continue reading](https://www.drugs.com/medical-answers/safe-ibuprofen-with-acetaminophen-2991821/) ## What is paracetamol / Panadol called in the US? Paracetamol is known as acetaminophen in the U.S. Acetaminophen relieves mild-to-moderate pain, headache and fever. It's available over-the-counter as brand names such as Tylenol, Mapap or Panadol, and also as generics and store-specific brands. There are no differences in the chemical or therapeutics uses of acetaminophen and paracetamol, although recommended doses or available products may differ between countries. [Continue reading](https://www.drugs.com/medical-answers/paracetamol-usa-3555654/) ## See also: ### [Celebrex](https://www.drugs.com/celebrex.html) Celebrex is a nonsteroidal anti-inflammatory drug used to treat pain or inflammation. Learn about ... 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Readable Markdown	Official Answer by Drugs.com A fever is defined as a body temperature of 38°C (100.4°F) or higher. Normal body temperature is usually 37°C (98.6°F), although it can be about a half degree Celsius higher or lower for some people and that’s normal for them. A fever occurs when your brain sets your body temperature higher than normal. Normal body temperature can change during the day based on activity level, hormone levels and whether you are sleeping or awake. Your normal body temperature is regulated or set by an area of your brain called your hypothalamus. Fever occurs when your body’s defense system — your immune system — reacts to an infection or illness, triggering your brain to raise your body temperature. This helps your immune system fight off the illness or infection, but a very high temperature can be dangerous. Fever is not the same as hyperthermia, which means your body temperature goes up due to the outside temperature. Hyperthermia is not caused by your brain and immune system. An example would be heat stroke. ## Fever grades in adults In an adult, a fever may be elevated, high or very high: - An elevated body temperature is between 37.5°C and 38°C (99.5°F to 100.4°F). - A fever is 38°C to 39.5°C (100.4°F to 103.1°F). - A high fever is 39.5°C (103.1°F). - A very high fever is above 41°C (105.8°F ). ## Fever in babies and children According to the American Academy of Pediatrics (AAP), normal temperature in children varies with a child’s age, time of day and level of activity. Fever is defined as a temperature of 38°C (100.4°F). - A fever that requires a call to the pediatrician right away would be 38°C (100.4°F) or higher for a baby under 3 months old. - A fever above 40°C (104°F) requires a call to the doctor at any age. ## How to measure fever To take your temperature, a digital thermometer is recommended instead of a mercury thermometer, especially in children, because mercury from a broken thermometer may be toxic. There are three types of digital thermometers. There are many variations, so it is important to read and follow the thermometer instructions carefully. They all must be turned on and they will beep to tell you when to read them: - A digital multi-use thermometer can be used to take a rectal, oral (mouth) or axillary (armpit) temperature in adults and children. In general, oral and armpit temperatures have not shown to be as accurate as rectal. Oral use is not recommended for children under age 4, according to the AAP, and AAP notes that rectal use is best, especially for infants and children under 3 months. Always clean the thermometer before and after use, and do not use a thermometer orally that has been used rectally. Do not take an oral temperature for 30 minutes after a hot or cold drink. - A temporal or forehead artery thermometer reads your temperature from a blood vessel under the skin of your temple or forehead. You will need to check the instructions to find out how far away from your skin to hold it. If you have been in hot or cold temperatures, you should adjust to normal temperature before taking a reading. - A tympanic digital thermometer measures heat inside your ear canal. This type can be used for anyone except babies. ## Related questions - [Can You Take Tramadol with Acetaminophen, Ibuprofen, or Aspirin?](https://www.drugs.com/medical-answers/you-tramadol-acetaminophen-ibuprofen-aspirin-3571039/) - [Acetaminophen vs paracetamol: What do you need to know?](https://www.drugs.com/medical-answers/acetaminophen-paracetamol-what-you-need-3576567/) - [What's the best medicine for sore throat?](https://www.drugs.com/medical-answers/good-medicine-severe-sore-throat-612310/) ## When and how to treat a fever Since ancient times, fevers have been associated with illness. It was not until the invention of the thermometer that normal temperature and fever temperatures were defined. Over time, the definitions have gone up and down slightly. At this time, there is a debate on when to treat a fever. - Some experts say a fever is a sign that your immune system is working and anything other than a very high fever should be left to run its course. - Others fear that fever may be damaging to your body and should be treated. Very high fever may damage body cells, especially brain cells. There are no guidelines for when to treat a fever. Treatment may depend on the cause and other symptoms, but most experts agree that a very high fever should be treated. - The usual treatment for adults is an over-the-counter medicine such as [acetaminophen](https://www.drugs.com/acetaminophen.html), [ibuprofen](https://www.drugs.com/ibuprofen.html) or [aspirin](https://www.drugs.com/aspirin.html). Rest and drinking lots of fluid are also recommended because fever can lead to fluid loss and dehydration. - The AAP recommends acetaminophen or ibuprofen, but not aspirin for treating fever in children. (Aspirin in children can raise the risk of a harmful condition called [Reye’s syndrome](https://www.drugs.com/cg/reye-syndrome.html).) - For children over age 2, follow the label directions according to age or weight to give the right dose. - For children under age 2, call your pharmacist or pediatrician to find the correct dose. - Children should also drink fluids to avoid dehydration. - Using ice packs or alcohol rubs to reduce fever is not recommended. ## When to call your doctor for fever For children, call the doctor if: - A child less than 3 months old has a fever over 38°C (100.4°F). Always call for any child with a fever 40°C (104°F) or higher. - A fever occurs with other symptoms, including headache, stiff neck, trouble breathing, rash, severe sore throat or ear pain, or persistent vomiting - A fever lasts more than 24 hours in a child under 2 years old - A fever causes a seizure - A fever lasts more than 3 days in a child over 2 years old For adults and older children, call if a fever is 104°F (40°C) or higher or if there are symptoms that include seizure, stiff neck, confusion, trouble breathing or any severe pain. References 1. U.S. National Library of Medicine Bookshelf. How is body temperature regulated and what is fever? InformedHealth.org. 2020. Available at: https://www.ncbi.nlm.nih.gov/books/NBK279457/. \[Accessed January 24, 2022\]. 2. U.S. National Library of Medicine Bookshelf. Physiology of Fever. StatPearls. August 2021. Available at: https://www.ncbi.nlm.nih.gov/books/NBK562334/. \[Accessed January 24, 2022\]. 3. American Academy of Pediatrics (AAP). Fever Without Fear. April 2016. Available at: https://www.healthychildren.org/English/health-issues/conditions/fever/Pages/Fever-Without-Fear.aspx. \[Accessed January 24, 2022\]. 4. American Academy of Pediatrics (AAP). How to take your child’s temperature. Available at: https://www.healthychildren.org/English/health-issues/conditions/fever/Pages/How-to-Take-a-Childs-Temperature.aspx. \[Accessed January 24, 2022\]. 5. Wise J. Rectal thermometer should be used for accurate temperature reading, analysis finds. BMJ 2015;351:h6125. https://www.bmj.com/content/351/bmj.h6125.full 6. Geneva II, Cuzzo B, Fazili T, Javaid W. Normal Body Temperature: A Systematic Review. Open Forum Infect Dis. 2019 Apr; 6(4): ofz032. https://dx.doi.org/10.1093%2Fofid%2Fofz032. 7. Ray JJ, Schulman CI. Fever: suppress it or let it ride? J Thorac Dis. 2015 Dec; 7(12): E633-E636. https://dx.doi.org/10.3978%2Fj.issn.2072-1439.2015.12.28. 8. U.S. National Library of Medicine MedlinePlus. Fever. December 2016. Available at: https://medlineplus.gov/fever.html. \[Accessed January 24, 2022\]. ## Read next ## How much Tylenol (acetaminophen) can you take in a day? For most adults, the maximum daily dose of Tylenol is 4,000 mg. This amount might be lower depending on your past medical history. [Continue reading](https://www.drugs.com/medical-answers/how-tylenol-you-take-day-3578621/) ## Advil (ibuprofen) and Tylenol (acetaminophen) together? Yes, it is safe to take Advil (ibuprofen) and Tylenol (acetaminophen) together if you need to for extra pain relief, such as for a dental extraction. This combination is more effective than taking either medication alone because they work through different mechanisms with minimal overlapping of side effects. But it is important to follow key safety guidelines. [Continue reading](https://www.drugs.com/medical-answers/safe-ibuprofen-with-acetaminophen-2991821/) ## What is paracetamol / Panadol called in the US? Paracetamol is known as acetaminophen in the U.S. Acetaminophen relieves mild-to-moderate pain, headache and fever. It's available over-the-counter as brand names such as Tylenol, Mapap or Panadol, and also as generics and store-specific brands. There are no differences in the chemical or therapeutics uses of acetaminophen and paracetamol, although recommended doses or available products may differ between countries. 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