🕷️ Crawler Inspector

URL Lookup

Direct Parameter Lookup

Raw Queries and Responses

1. Shard Calculation

Query:

Response:

Calculated Shard: 173 (from laksa099)

2. Crawled Status Check

Query:

curl -X POST \
  'http://laksa173.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.pennmedicine.org/conditions/rashes\')), getAhrefsUnparsedNoserviceFromURL(\'https://www.pennmedicine.org/conditions/rashes\'))) FORMAT JSONEachRow'

Response:

{"found_url":"https:\/\/www.pennmedicine.org\/conditions\/rashes","crawl_time":1775762762,"first_indexed_time":1751173361,"http_code":200,"src_unparsed":"org,pennmedicine!www,\/conditions\/rashes s443","src_root_hash":"11763615100892604773","history_drop_reason":null,"meta_title":"Rashes","meta_descriptions":[],"attrs_boilerpipe_text":"Definition\nRashes involve changes in the color, feeling or texture of your skin.\nConsiderations\nOften, the cause of a rash can be determined from how it looks and its location and symptoms. Skin testing, such as a scraping, culture, or biopsy, may also be used to help with diagnosis. Sometimes, the cause of the rash remains unknown.\nCauses\nA rash is often due to dermatitis, meaning inflammation of the skin. Contact dermatitis is caused by things your skin touches, such as:\nChemicals in elastic, latex, and rubber products\nCosmetics, soaps, and detergents\nDyes and other chemicals in clothing\nPoison ivy, oak, or sumac\nSeborrheic dermatitis is a rash that appears in patches of redness and scaling around the eyebrows, eyelids, mouth, nose, trunk, and behind the ears. If it happens on your scalp, it is called dandruff in adults and cradle cap in infants.\nAge, stress, fatigue, weather extremes, oily skin, infrequent shampooing, and alcohol-based lotions aggravate this harmless but bothersome condition.\nOther common causes of a rash include:\nEczema (atopic dermatitis) -- Tends to happen in people with allergies or asthma. The rash is generally red, itchy, and scaly.\nPsoriasis -- Tends to occur as red, scaly, patches over joints and along the scalp. It is sometimes itchy. Fingernails may also be affected.\nImpetigo -- Common in children, this infection is from bacteria that live in the top layers of the skin. It appears as red sores that turn into blisters, ooze, then form a honey colored crust over all or part of the rash.\nShingles -- A painful blistered skin condition caused by the same virus as chickenpox. The virus can lie dormant in your body for many years and re-emerge as shingles. It usually affects only one side of the body.\nChildhood illnesses such as chickenpox, measles, roseola, rubella, hand-foot-mouth disease, fifth disease, and scarlet fever.\nMedicines\nInsect bites or stings.\nMany medical conditions can cause a rash as well. These include:\nLupus erythematosus (an immune system disease)\nRheumatoid arthritis, especially the juvenile type\nKawasaki disease (inflammation of the blood vessels)\nCertain body-wide (systemic) viral, bacterial or fungal infections\nWhen to Contact a Medical Professional\nCall 911 or the local emergency number if:\nYou are short of breath, your throat is tight, or your face is swollen.\nYour child has a purple rash that looks like a bruise.\nContact your health care provider if:\nYou have joint pain, fever, or a sore throat.\nYou have streaks of redness, swelling, or very tender areas as these may indicate an infection.\nYou are taking a new medicine. Do not change or stop any of your medicines without contacting your provider.\nYou may have a tick bite.\nHome treatment doesn't work, or your symptoms get worse.\nWhat to Expect at Your Office Visit\nYour provider will perform a physical exam and ask about your medical history and symptoms. Questions may include:\nWhen did the rash begin?\nWhat parts of your body are affected?\nDoes anything make the rash better? Worse?\nHave you used any new soaps, detergents, lotions, or cosmetics recently?\nHave you been in any wooded areas recently?\nHave you noticed a tick or insect bite?\nHave you had any change in your medicines?\nHave you eaten anything unusual?\nDo you have any other symptoms, like itching or scaling?\nWhat medical problems do you have, such as asthma or allergies?\nHave you recently traveled out of the area where you live?\nTests may include:\nAllergy testing\nBlood tests\nSkin biopsy\nSkin scrapings\nDepending on the cause of your rash, treatments may include medicated creams or lotions, medicines taken by mouth, or skin surgery.\nMany primary care providers are comfortable dealing with common rashes. For more complicated skin disorders, you may need a referral to a dermatologist.\nReferences\nJames WD, Elston DM, Treat JR, Rosenbach MA, Neuhaus IM. Cutaneous signs and diagnosis. In: James WD, Elston DM, Treat JR, Rosenbach MA, Neuhaus IM, eds.\nAndrews' Diseases of the Skin\n. 13th ed. Philadelphia, PA: Elsevier; 2020:chap 2.\nKo CJ. Approach to skin diseases. In: Goldman L, Cooney KA, eds.\nGoldman-Cecil Medicine\n. 27th ed. Philadelphia, PA: Elsevier; 2024:chap 403.\nVersion Info\nLast reviewed on: 10\/14\/2024\nElika Hoss, MD, Assistant Professor of Dermatology, Mayo Clinic, Scottsdale, AZ. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.","attrs_markdown":"[800-789-7366](tel:8007897366)\n\n[Patient login](https:\/\/secure.mypennmedicine.org\/MyPennMedicine\/)\n\n[![Penn Medicine Home](https:\/\/edge.sitecorecloud.io\/thetrusteesc483-pennmedicine-prod-fab7\/media\/Project\/PennMedicine\/Logos\/pm.svg?iar=0)](https:\/\/www.pennmedicine.org\/)\n\n- [Get care](https:\/\/www.pennmedicine.org\/Get-care)\n- [Find a doctor](https:\/\/www.pennmedicine.org\/Find-Doctor)\n- Specialties & services\n- Locations\n- For patients & visitors\n- Search\n\n# Rashes\n[Find a doctor](https:\/\/www.pennmedicine.org\/Find-Doctor\/Search?condition=a56aedba-f9ba-4918-9d1f-d03d682eca9c)\n\n[Call 800-789-7366](tel:\/\/+1-800-789-7366)\n\n- [About](https:\/\/www.pennmedicine.org\/conditions\/rashes#About)\n- [Causes](https:\/\/www.pennmedicine.org\/conditions\/rashes#Causes)\n- [Treatment](https:\/\/www.pennmedicine.org\/conditions\/rashes#Treatment)\n\n## Definition\nRashes involve changes in the color, feeling or texture of your skin.\n\n## Considerations\nOften, the cause of a rash can be determined from how it looks and its location and symptoms. Skin testing, such as a scraping, culture, or biopsy, may also be used to help with diagnosis. Sometimes, the cause of the rash remains unknown.\n\n## Causes\nA rash is often due to dermatitis, meaning inflammation of the skin. Contact dermatitis is caused by things your skin touches, such as:\n\n- Chemicals in elastic, latex, and rubber products\n- Cosmetics, soaps, and detergents\n- Dyes and other chemicals in clothing\n- Poison ivy, oak, or sumac\n\nSeborrheic dermatitis is a rash that appears in patches of redness and scaling around the eyebrows, eyelids, mouth, nose, trunk, and behind the ears. If it happens on your scalp, it is called dandruff in adults and cradle cap in infants.\n\nAge, stress, fatigue, weather extremes, oily skin, infrequent shampooing, and alcohol-based lotions aggravate this harmless but bothersome condition.\n\nOther common causes of a rash include:\n\n- Eczema (atopic dermatitis) -- Tends to happen in people with allergies or asthma. The rash is generally red, itchy, and scaly.\n- Psoriasis -- Tends to occur as red, scaly, patches over joints and along the scalp. It is sometimes itchy. Fingernails may also be affected.\n- Impetigo -- Common in children, this infection is from bacteria that live in the top layers of the skin. It appears as red sores that turn into blisters, ooze, then form a honey colored crust over all or part of the rash.\n- Shingles -- A painful blistered skin condition caused by the same virus as chickenpox. The virus can lie dormant in your body for many years and re-emerge as shingles. It usually affects only one side of the body.\n- Childhood illnesses such as chickenpox, measles, roseola, rubella, hand-foot-mouth disease, fifth disease, and scarlet fever.\n- Medicines\n- Insect bites or stings.\n\nMany medical conditions can cause a rash as well. These include:\n\n- Lupus erythematosus (an immune system disease)\n- Rheumatoid arthritis, especially the juvenile type\n- Kawasaki disease (inflammation of the blood vessels)\n- Certain body-wide (systemic) viral, bacterial or fungal infections\n\n## When to Contact a Medical Professional\nCall 911 or the local emergency number if:\n\n- You are short of breath, your throat is tight, or your face is swollen.\n- Your child has a purple rash that looks like a bruise.\n\nContact your health care provider if:\n\n- You have joint pain, fever, or a sore throat.\n- You have streaks of redness, swelling, or very tender areas as these may indicate an infection.\n- You are taking a new medicine. Do not change or stop any of your medicines without contacting your provider.\n- You may have a tick bite.\n- Home treatment doesn't work, or your symptoms get worse.\n\n## What to Expect at Your Office Visit\nYour provider will perform a physical exam and ask about your medical history and symptoms. Questions may include:\n\n- When did the rash begin?\n- What parts of your body are affected?\n- Does anything make the rash better? Worse?\n- Have you used any new soaps, detergents, lotions, or cosmetics recently?\n- Have you been in any wooded areas recently?\n- Have you noticed a tick or insect bite?\n- Have you had any change in your medicines?\n- Have you eaten anything unusual?\n- Do you have any other symptoms, like itching or scaling?\n- What medical problems do you have, such as asthma or allergies?\n- Have you recently traveled out of the area where you live?\n\nTests may include:\n\n- Allergy testing\n- Blood tests\n- Skin biopsy\n- Skin scrapings\n\nDepending on the cause of your rash, treatments may include medicated creams or lotions, medicines taken by mouth, or skin surgery.\n\nMany primary care providers are comfortable dealing with common rashes. For more complicated skin disorders, you may need a referral to a dermatologist.\n\n## References\nJames WD, Elston DM, Treat JR, Rosenbach MA, Neuhaus IM. Cutaneous signs and diagnosis. In: James WD, Elston DM, Treat JR, Rosenbach MA, Neuhaus IM, eds. *Andrews' Diseases of the Skin*. 13th ed. Philadelphia, PA: Elsevier; 2020:chap 2.\n\nKo CJ. Approach to skin diseases. In: Goldman L, Cooney KA, eds. *Goldman-Cecil Medicine*. 27th ed. Philadelphia, PA: Elsevier; 2024:chap 403.\n\n## Version Info\nLast reviewed on: 10\/14\/2024\n\nElika Hoss, MD, Assistant Professor of Dermatology, Mayo Clinic, Scottsdale, AZ. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.\n\n### Schedule an appointment\nWe can help you schedule an appointment or you can search our directory of specialists.\n\n[Find a doctor](https:\/\/www.pennmedicine.org\/Find-Doctor?condition=a56aedba-f9ba-4918-9d1f-d03d682eca9c)\n\n[Call 800-789-7366](tel:\/\/+1-800-789-7366)\n\n- Learn more about Penn Medicine\n  - - [About us](https:\/\/www.pennmedicine.org\/About)\n    - [Pioneering the future of medicine](https:\/\/www.pennmedicine.org\/About\/Pioneering-the-future-of-medicine)\n    - [Transforming patient care](https:\/\/www.pennmedicine.org\/About\/Transforming-patient-care)\n    - [Supporting our communities](https:\/\/www.pennmedicine.org\/Supporting-our-communities)\n- For healthcare professionals\n  - - [Refer a patient](https:\/\/www.pennmedicine.org\/Physician-resources\/Refer-patient)\n    - [PhysicianLink login](https:\/\/secure3.pennmedicine.org\/EpicLink\/common\/epic_login.asp)\n    - [Physician resources](https:\/\/www.pennmedicine.org\/Physician-resources)\n- For international patients\n  - - [Global medicine](https:\/\/www.pennmedicine.org\/Global-medicine)\n- Ways to help\n  - - [Giving](https:\/\/www.pennmedicine.org\/Giving)\n    - [Volunteering](https:\/\/www.pennmedicine.org\/Volunteering)\n    - [Organ donation](https:\/\/www.pennmedicine.org\/Specialties\/Transplant\/Living-organ-donation)\n    - [Patient & family advisors](https:\/\/www.pennmedicine.org\/Patient-resources\/Information-for-patients\/Patient-family-advisory-councils)\n- Research & innovations\n  - - [Research](https:\/\/www.pennmedicine.org\/Research)\n    - [Office of Clinical Research](https:\/\/www.med.upenn.edu\/clinicalresearch)\n- For employees\n  - - [Employee resources](https:\/\/www.pennmedicine.org\/Employee-resources)\n- News and events\n  - - [News & views](https:\/\/www.pennmedicine.org\/News)\n    - [News releases](https:\/\/www.pennmedicine.org\/News\/Search)\n    - [News media resources](https:\/\/www.pennmedicine.org\/News\/Media-resources)\n    - [Events](https:\/\/www.pennmedicine.org\/Events)\n- Join us\n  - - [Careers](https:\/\/careers.pennmedicine.org\/)\n- For students & academics\n  - - [Academic departments](https:\/\/www3.pennmedicine.org\/departments-and-centers)\n    - [Fellowship & residency programs](https:\/\/www3.pennmedicine.org\/for-health-care-professionals\/fellowship-and-residency-programs\/)\n    - [Perelman School of Medicine](https:\/\/www.med.upenn.edu\/)\n\n- [Contact us](https:\/\/www.pennmedicine.org\/Contact-us)\n- [HIPAA & privacy](https:\/\/www.pennmedicine.org\/Hipaa-and-privacy)\n- [Terms of use](https:\/\/www.pennmedicine.org\/Patient-resources\/Policies\/Terms-of-use)\n- [Legal disclaimer](https:\/\/www.pennmedicine.org\/Patient-resources\/Policies\/Legal-disclaimer)\n- [Price transparency](https:\/\/www.pennmedicine.org\/Patient-resources\/Policies\/Pricing-transparency)\n\n- Penn Medicine, Philadelphia, PA 800-789-7366 © 2025, The Trustees of the University of Pennsylvania\n\nNeed help?","attrs_readable_markdown":"Definition\n\nRashes involve changes in the color, feeling or texture of your skin.\n\nConsiderations\n\nOften, the cause of a rash can be determined from how it looks and its location and symptoms. Skin testing, such as a scraping, culture, or biopsy, may also be used to help with diagnosis. Sometimes, the cause of the rash remains unknown.\n\nCauses\n\nA rash is often due to dermatitis, meaning inflammation of the skin. Contact dermatitis is caused by things your skin touches, such as:\n\n- Chemicals in elastic, latex, and rubber products\n- Cosmetics, soaps, and detergents\n- Dyes and other chemicals in clothing\n- Poison ivy, oak, or sumac\n\nSeborrheic dermatitis is a rash that appears in patches of redness and scaling around the eyebrows, eyelids, mouth, nose, trunk, and behind the ears. If it happens on your scalp, it is called dandruff in adults and cradle cap in infants.\n\nAge, stress, fatigue, weather extremes, oily skin, infrequent shampooing, and alcohol-based lotions aggravate this harmless but bothersome condition.\n\nOther common causes of a rash include:\n\n- Eczema (atopic dermatitis) -- Tends to happen in people with allergies or asthma. The rash is generally red, itchy, and scaly.\n- Psoriasis -- Tends to occur as red, scaly, patches over joints and along the scalp. It is sometimes itchy. Fingernails may also be affected.\n- Impetigo -- Common in children, this infection is from bacteria that live in the top layers of the skin. It appears as red sores that turn into blisters, ooze, then form a honey colored crust over all or part of the rash.\n- Shingles -- A painful blistered skin condition caused by the same virus as chickenpox. The virus can lie dormant in your body for many years and re-emerge as shingles. It usually affects only one side of the body.\n- Childhood illnesses such as chickenpox, measles, roseola, rubella, hand-foot-mouth disease, fifth disease, and scarlet fever.\n- Medicines\n- Insect bites or stings.\n\nMany medical conditions can cause a rash as well. These include:\n\n- Lupus erythematosus (an immune system disease)\n- Rheumatoid arthritis, especially the juvenile type\n- Kawasaki disease (inflammation of the blood vessels)\n- Certain body-wide (systemic) viral, bacterial or fungal infections\n\nWhen to Contact a Medical Professional\n\nCall 911 or the local emergency number if:\n\n- You are short of breath, your throat is tight, or your face is swollen.\n- Your child has a purple rash that looks like a bruise.\n\nContact your health care provider if:\n\n- You have joint pain, fever, or a sore throat.\n- You have streaks of redness, swelling, or very tender areas as these may indicate an infection.\n- You are taking a new medicine. Do not change or stop any of your medicines without contacting your provider.\n- You may have a tick bite.\n- Home treatment doesn't work, or your symptoms get worse.\n\nWhat to Expect at Your Office Visit\n\nYour provider will perform a physical exam and ask about your medical history and symptoms. Questions may include:\n\n- When did the rash begin?\n- What parts of your body are affected?\n- Does anything make the rash better? Worse?\n- Have you used any new soaps, detergents, lotions, or cosmetics recently?\n- Have you been in any wooded areas recently?\n- Have you noticed a tick or insect bite?\n- Have you had any change in your medicines?\n- Have you eaten anything unusual?\n- Do you have any other symptoms, like itching or scaling?\n- What medical problems do you have, such as asthma or allergies?\n- Have you recently traveled out of the area where you live?\n\nTests may include:\n\n- Allergy testing\n- Blood tests\n- Skin biopsy\n- Skin scrapings\n\nDepending on the cause of your rash, treatments may include medicated creams or lotions, medicines taken by mouth, or skin surgery.\n\nMany primary care providers are comfortable dealing with common rashes. For more complicated skin disorders, you may need a referral to a dermatologist.\n\nReferences\n\nJames WD, Elston DM, Treat JR, Rosenbach MA, Neuhaus IM. Cutaneous signs and diagnosis. In: James WD, Elston DM, Treat JR, Rosenbach MA, Neuhaus IM, eds. *Andrews' Diseases of the Skin*. 13th ed. Philadelphia, PA: Elsevier; 2020:chap 2.\n\nKo CJ. Approach to skin diseases. In: Goldman L, Cooney KA, eds. *Goldman-Cecil Medicine*. 27th ed. Philadelphia, PA: Elsevier; 2024:chap 403.\n\nVersion Info\n\nLast reviewed on: 10\/14\/2024\n\nElika Hoss, MD, Assistant Professor of Dermatology, Mayo Clinic, Scottsdale, AZ. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.","meta_canonical":null}

3. Robots.txt Check

Query:

Response:

4. Spam/Ban Check

Query:

Response:

5. Seen Status Check

ℹ️ Skipped - page is already crawled

📄

INDEXABLE

✅

CRAWLED

1 day ago

🤖

ROBOTS SERVER UNREACHABLE

Failed to connect to robots server: Operation timed out after 2002 milliseconds with 0 bytes received

Page Info Filters

Filter	Status	Condition	Details
HTTP status	PASS	`download_http_code = 200`	HTTP 200
Age cutoff	PASS	`download_stamp > now() - 6 MONTH`	0.1 months ago
History drop	PASS	`isNull(history_drop_reason)`	No drop reason
Spam/ban	PASS	`fh_dont_index != 1 AND ml_spam_score = 0`	ml_spam_score=0
Canonical	PASS	`meta_canonical IS NULL OR = '' OR = src_unparsed`	Not set

Page Details

Property	Value
URL	https://www.pennmedicine.org/conditions/rashes
Last Crawled	2026-04-09 19:26:02 (1 day ago)
First Indexed	2025-06-29 05:02:41 (9 months ago)
HTTP Status Code	200
Meta Title	Rashes
Meta Description	null
Meta Canonical	null
Boilerpipe Text	Definition Rashes involve changes in the color, feeling or texture of your skin. Considerations Often, the cause of a rash can be determined from how it looks and its location and symptoms. Skin testing, such as a scraping, culture, or biopsy, may also be used to help with diagnosis. Sometimes, the cause of the rash remains unknown. Causes A rash is often due to dermatitis, meaning inflammation of the skin. Contact dermatitis is caused by things your skin touches, such as: Chemicals in elastic, latex, and rubber products Cosmetics, soaps, and detergents Dyes and other chemicals in clothing Poison ivy, oak, or sumac Seborrheic dermatitis is a rash that appears in patches of redness and scaling around the eyebrows, eyelids, mouth, nose, trunk, and behind the ears. If it happens on your scalp, it is called dandruff in adults and cradle cap in infants. Age, stress, fatigue, weather extremes, oily skin, infrequent shampooing, and alcohol-based lotions aggravate this harmless but bothersome condition. Other common causes of a rash include: Eczema (atopic dermatitis) -- Tends to happen in people with allergies or asthma. The rash is generally red, itchy, and scaly. Psoriasis -- Tends to occur as red, scaly, patches over joints and along the scalp. It is sometimes itchy. Fingernails may also be affected. Impetigo -- Common in children, this infection is from bacteria that live in the top layers of the skin. It appears as red sores that turn into blisters, ooze, then form a honey colored crust over all or part of the rash. Shingles -- A painful blistered skin condition caused by the same virus as chickenpox. The virus can lie dormant in your body for many years and re-emerge as shingles. It usually affects only one side of the body. Childhood illnesses such as chickenpox, measles, roseola, rubella, hand-foot-mouth disease, fifth disease, and scarlet fever. Medicines Insect bites or stings. Many medical conditions can cause a rash as well. These include: Lupus erythematosus (an immune system disease) Rheumatoid arthritis, especially the juvenile type Kawasaki disease (inflammation of the blood vessels) Certain body-wide (systemic) viral, bacterial or fungal infections When to Contact a Medical Professional Call 911 or the local emergency number if: You are short of breath, your throat is tight, or your face is swollen. Your child has a purple rash that looks like a bruise. Contact your health care provider if: You have joint pain, fever, or a sore throat. You have streaks of redness, swelling, or very tender areas as these may indicate an infection. You are taking a new medicine. Do not change or stop any of your medicines without contacting your provider. You may have a tick bite. Home treatment doesn't work, or your symptoms get worse. What to Expect at Your Office Visit Your provider will perform a physical exam and ask about your medical history and symptoms. Questions may include: When did the rash begin? What parts of your body are affected? Does anything make the rash better? Worse? Have you used any new soaps, detergents, lotions, or cosmetics recently? Have you been in any wooded areas recently? Have you noticed a tick or insect bite? Have you had any change in your medicines? Have you eaten anything unusual? Do you have any other symptoms, like itching or scaling? What medical problems do you have, such as asthma or allergies? Have you recently traveled out of the area where you live? Tests may include: Allergy testing Blood tests Skin biopsy Skin scrapings Depending on the cause of your rash, treatments may include medicated creams or lotions, medicines taken by mouth, or skin surgery. Many primary care providers are comfortable dealing with common rashes. For more complicated skin disorders, you may need a referral to a dermatologist. References James WD, Elston DM, Treat JR, Rosenbach MA, Neuhaus IM. Cutaneous signs and diagnosis. In: James WD, Elston DM, Treat JR, Rosenbach MA, Neuhaus IM, eds. Andrews' Diseases of the Skin . 13th ed. Philadelphia, PA: Elsevier; 2020:chap 2. Ko CJ. Approach to skin diseases. In: Goldman L, Cooney KA, eds. Goldman-Cecil Medicine . 27th ed. Philadelphia, PA: Elsevier; 2024:chap 403. Version Info Last reviewed on: 10/14/2024 Elika Hoss, MD, Assistant Professor of Dermatology, Mayo Clinic, Scottsdale, AZ. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.
Markdown	[800-789-7366](tel:8007897366) [Patient login](https://secure.mypennmedicine.org/MyPennMedicine/) [![Penn Medicine Home](https://edge.sitecorecloud.io/thetrusteesc483-pennmedicine-prod-fab7/media/Project/PennMedicine/Logos/pm.svg?iar=0)](https://www.pennmedicine.org/) - [Get care](https://www.pennmedicine.org/Get-care) - [Find a doctor](https://www.pennmedicine.org/Find-Doctor) - Specialties & services - Locations - For patients & visitors - Search # Rashes [Find a doctor](https://www.pennmedicine.org/Find-Doctor/Search?condition=a56aedba-f9ba-4918-9d1f-d03d682eca9c) [Call 800-789-7366](tel://+1-800-789-7366) - [About](https://www.pennmedicine.org/conditions/rashes#About) - [Causes](https://www.pennmedicine.org/conditions/rashes#Causes) - [Treatment](https://www.pennmedicine.org/conditions/rashes#Treatment) ## Definition Rashes involve changes in the color, feeling or texture of your skin. ## Considerations Often, the cause of a rash can be determined from how it looks and its location and symptoms. Skin testing, such as a scraping, culture, or biopsy, may also be used to help with diagnosis. Sometimes, the cause of the rash remains unknown. ## Causes A rash is often due to dermatitis, meaning inflammation of the skin. Contact dermatitis is caused by things your skin touches, such as: - Chemicals in elastic, latex, and rubber products - Cosmetics, soaps, and detergents - Dyes and other chemicals in clothing - Poison ivy, oak, or sumac Seborrheic dermatitis is a rash that appears in patches of redness and scaling around the eyebrows, eyelids, mouth, nose, trunk, and behind the ears. If it happens on your scalp, it is called dandruff in adults and cradle cap in infants. Age, stress, fatigue, weather extremes, oily skin, infrequent shampooing, and alcohol-based lotions aggravate this harmless but bothersome condition. Other common causes of a rash include: - Eczema (atopic dermatitis) -- Tends to happen in people with allergies or asthma. The rash is generally red, itchy, and scaly. - Psoriasis -- Tends to occur as red, scaly, patches over joints and along the scalp. It is sometimes itchy. Fingernails may also be affected. - Impetigo -- Common in children, this infection is from bacteria that live in the top layers of the skin. It appears as red sores that turn into blisters, ooze, then form a honey colored crust over all or part of the rash. - Shingles -- A painful blistered skin condition caused by the same virus as chickenpox. The virus can lie dormant in your body for many years and re-emerge as shingles. It usually affects only one side of the body. - Childhood illnesses such as chickenpox, measles, roseola, rubella, hand-foot-mouth disease, fifth disease, and scarlet fever. - Medicines - Insect bites or stings. Many medical conditions can cause a rash as well. These include: - Lupus erythematosus (an immune system disease) - Rheumatoid arthritis, especially the juvenile type - Kawasaki disease (inflammation of the blood vessels) - Certain body-wide (systemic) viral, bacterial or fungal infections ## When to Contact a Medical Professional Call 911 or the local emergency number if: - You are short of breath, your throat is tight, or your face is swollen. - Your child has a purple rash that looks like a bruise. Contact your health care provider if: - You have joint pain, fever, or a sore throat. - You have streaks of redness, swelling, or very tender areas as these may indicate an infection. - You are taking a new medicine. Do not change or stop any of your medicines without contacting your provider. - You may have a tick bite. - Home treatment doesn't work, or your symptoms get worse. ## What to Expect at Your Office Visit Your provider will perform a physical exam and ask about your medical history and symptoms. Questions may include: - When did the rash begin? - What parts of your body are affected? - Does anything make the rash better? Worse? - Have you used any new soaps, detergents, lotions, or cosmetics recently? - Have you been in any wooded areas recently? - Have you noticed a tick or insect bite? - Have you had any change in your medicines? - Have you eaten anything unusual? - Do you have any other symptoms, like itching or scaling? - What medical problems do you have, such as asthma or allergies? - Have you recently traveled out of the area where you live? Tests may include: - Allergy testing - Blood tests - Skin biopsy - Skin scrapings Depending on the cause of your rash, treatments may include medicated creams or lotions, medicines taken by mouth, or skin surgery. Many primary care providers are comfortable dealing with common rashes. For more complicated skin disorders, you may need a referral to a dermatologist. ## References James WD, Elston DM, Treat JR, Rosenbach MA, Neuhaus IM. Cutaneous signs and diagnosis. In: James WD, Elston DM, Treat JR, Rosenbach MA, Neuhaus IM, eds. Andrews' Diseases of the Skin. 13th ed. Philadelphia, PA: Elsevier; 2020:chap 2. Ko CJ. Approach to skin diseases. In: Goldman L, Cooney KA, eds. Goldman-Cecil Medicine. 27th ed. Philadelphia, PA: Elsevier; 2024:chap 403. ## Version Info Last reviewed on: 10/14/2024 Elika Hoss, MD, Assistant Professor of Dermatology, Mayo Clinic, Scottsdale, AZ. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team. ### Schedule an appointment We can help you schedule an appointment or you can search our directory of specialists. 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Readable Markdown	Definition Rashes involve changes in the color, feeling or texture of your skin. Considerations Often, the cause of a rash can be determined from how it looks and its location and symptoms. Skin testing, such as a scraping, culture, or biopsy, may also be used to help with diagnosis. Sometimes, the cause of the rash remains unknown. Causes A rash is often due to dermatitis, meaning inflammation of the skin. Contact dermatitis is caused by things your skin touches, such as: - Chemicals in elastic, latex, and rubber products - Cosmetics, soaps, and detergents - Dyes and other chemicals in clothing - Poison ivy, oak, or sumac Seborrheic dermatitis is a rash that appears in patches of redness and scaling around the eyebrows, eyelids, mouth, nose, trunk, and behind the ears. If it happens on your scalp, it is called dandruff in adults and cradle cap in infants. Age, stress, fatigue, weather extremes, oily skin, infrequent shampooing, and alcohol-based lotions aggravate this harmless but bothersome condition. Other common causes of a rash include: - Eczema (atopic dermatitis) -- Tends to happen in people with allergies or asthma. The rash is generally red, itchy, and scaly. - Psoriasis -- Tends to occur as red, scaly, patches over joints and along the scalp. It is sometimes itchy. Fingernails may also be affected. - Impetigo -- Common in children, this infection is from bacteria that live in the top layers of the skin. It appears as red sores that turn into blisters, ooze, then form a honey colored crust over all or part of the rash. - Shingles -- A painful blistered skin condition caused by the same virus as chickenpox. The virus can lie dormant in your body for many years and re-emerge as shingles. It usually affects only one side of the body. - Childhood illnesses such as chickenpox, measles, roseola, rubella, hand-foot-mouth disease, fifth disease, and scarlet fever. - Medicines - Insect bites or stings. Many medical conditions can cause a rash as well. These include: - Lupus erythematosus (an immune system disease) - Rheumatoid arthritis, especially the juvenile type - Kawasaki disease (inflammation of the blood vessels) - Certain body-wide (systemic) viral, bacterial or fungal infections When to Contact a Medical Professional Call 911 or the local emergency number if: - You are short of breath, your throat is tight, or your face is swollen. - Your child has a purple rash that looks like a bruise. Contact your health care provider if: - You have joint pain, fever, or a sore throat. - You have streaks of redness, swelling, or very tender areas as these may indicate an infection. - You are taking a new medicine. Do not change or stop any of your medicines without contacting your provider. - You may have a tick bite. - Home treatment doesn't work, or your symptoms get worse. What to Expect at Your Office Visit Your provider will perform a physical exam and ask about your medical history and symptoms. Questions may include: - When did the rash begin? - What parts of your body are affected? - Does anything make the rash better? Worse? - Have you used any new soaps, detergents, lotions, or cosmetics recently? - Have you been in any wooded areas recently? - Have you noticed a tick or insect bite? - Have you had any change in your medicines? - Have you eaten anything unusual? - Do you have any other symptoms, like itching or scaling? - What medical problems do you have, such as asthma or allergies? - Have you recently traveled out of the area where you live? Tests may include: - Allergy testing - Blood tests - Skin biopsy - Skin scrapings Depending on the cause of your rash, treatments may include medicated creams or lotions, medicines taken by mouth, or skin surgery. Many primary care providers are comfortable dealing with common rashes. For more complicated skin disorders, you may need a referral to a dermatologist. References James WD, Elston DM, Treat JR, Rosenbach MA, Neuhaus IM. Cutaneous signs and diagnosis. In: James WD, Elston DM, Treat JR, Rosenbach MA, Neuhaus IM, eds. Andrews' Diseases of the Skin. 13th ed. Philadelphia, PA: Elsevier; 2020:chap 2. Ko CJ. Approach to skin diseases. In: Goldman L, Cooney KA, eds. Goldman-Cecil Medicine. 27th ed. Philadelphia, PA: Elsevier; 2024:chap 403. Version Info Last reviewed on: 10/14/2024 Elika Hoss, MD, Assistant Professor of Dermatology, Mayo Clinic, Scottsdale, AZ. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.
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