🕷️ Crawler Inspector

URL Lookup

Direct Parameter Lookup

Raw Queries and Responses

1. Shard Calculation

Query:

Response:

Calculated Shard: 116 (from laksa168)

2. Crawled Status Check

Query:

curl -X POST \
  'http://laksa116.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, ml_categories_json AS ml_categories_json, ml_types_json AS ml_types_json, ml_intent_types_json AS ml_intent_types_json, meta_language AS meta_language, attrs_author AS attrs_author, ifNull(toUnixTimestamp(attrs_publish_time), 0) AS attrs_publish_time, ifNull(toUnixTimestamp(attrs_original_publish_time), 0) AS attrs_original_publish_time, ifNull(attrs_is_republished, 0) AS attrs_is_republished, ifNull(attrs_nr_words, 0) AS attrs_nr_words, ifNull(attrs_boilerpipe_nr_words, 0) AS attrs_boilerpipe_nr_words, ifNull(body_ext_links_number, 0) AS body_ext_links_number, ifNull(body_int_links_number, 0) AS body_int_links_number, ifNull(meta_nofollow, 0) AS meta_nofollow, ifNull(meta_noarchive, 0) AS meta_noarchive, ifNull(props_was_rendered, 0) AS props_was_rendered, ifNull(src_redirect, \'\') AS src_redirect, ifNull(download_time_msec, 0) AS download_time_msec, ifNull(download_ttfb_msec, 0) AS download_ttfb_msec, ifNull(download_size, 0) AS download_size FROM crawler3.page_info_local FINAL PREWHERE (src_root_hash, src_unparsed) IN ((getAhrefsRootHashFromUnparsed(getAhrefsUnparsedNoserviceFromURL(\'https://www.hopkinsmedicine.org/health/conditions-and-diseases/dermatitis-herpetiformis\')), getAhrefsUnparsedNoserviceFromURL(\'https://www.hopkinsmedicine.org/health/conditions-and-diseases/dermatitis-herpetiformis\'))) FORMAT JSONEachRow'

Response:

{"found_url":"https:\/\/www.hopkinsmedicine.org\/health\/conditions-and-diseases\/dermatitis-herpetiformis","crawl_time":1776464970,"first_indexed_time":1554385018,"http_code":200,"src_unparsed":"org,hopkinsmedicine!www,\/health\/conditions-and-diseases\/dermatitis-herpetiformis s443","src_root_hash":"4754538707639265316","history_drop_reason":null,"meta_title":"Dermatitis Herpetiformis | Johns Hopkins Medicine","meta_descriptions":["Dermatitis herpetiformis (DH) is an intensely itchy skin disease. It causes clusters of small blisters and bumps."],"attrs_boilerpipe_text":"Skin\nWhat is dermatitis herpetiformis (DH)?\nDermatitis herpetiformis (DH) is an intensely itchy skin disease. It causes clusters of small blisters and bumps. It typically affects people in their 30s to 50s, but it can happen at any age. This lifelong condition affects more men than women.\nWhat causes dermatitis herpetiformis?\nDespite its name, the\nherpes virus\ndoes not cause DH.\nDH is caused by a sensitivity or intolerance to gluten. Gluten is a protein found in wheat and grains. When you have DH and eat food with gluten, the gluten combines with an antibody from the intestines. As the gluten and antibody circulate in the blood, they clog small blood vessels in the skin. This is what causes the rash.\nWho is at risk for dermatitis herpetiformis?\nDH is found most often in people of northern European heritage. The following diseases increase your risk of DH:\nAutoimmune thyroid disease\nCeliac disease\nType 1 diabetes\nSjögren syndrome\nLupus\nWhat are the symptoms of dermatitis herpetiformis?\nThe following are the most common symptoms of DH. However, each person may experience symptoms differently. Symptoms may include:\nClusters of itchy, small blisters and bumps, mostly on the elbows, lower back, buttocks, knees, and back of the head\nSevere itching and burning\nErosions and scratches are often seen on the skin\nThe gut may also have the same allergy to gluten. This is known as celiac disease. You can have both DH and celiac. Some cases of celiac become cancerous. Because of this, if you have celiac disease, it is important to see a healthcare provider who specializes in the stomach and intestines (a gastroenterologist).\nThe symptoms of DH may look like other skin conditions. Always talk with your healthcare provider for a diagnosis.\nHow is dermatitis herpetiformis diagnosed?\nIn addition to a medical history and physical exam, DH is usually confirmed with a skin biopsy and a specialized type of immunofluorescent stain that helps to detect the IgA antibodies. You may also have a blood tests to find certain antibodies.\nHow is dermatitis herpetiformis treated?\nDH may be well-controlled with treatment. Specific treatment will be determined by your healthcare provider based on:\nYour age, overall health, and medical history\nExtent of the condition\nYour tolerance for specific medicines, procedures, and therapies\nExpectation for the course of the condition\nYour opinion or preference\nThe symptoms of DH may go away if you cut all gluten from your diet. Healing may take several weeks to months. Your healthcare provider may also prescribe a medicine called dapsone. This medicine suppresses the skin response and may improve symptoms. However, the medicine has some side effects, including anemia. If dapsone is prescribed for you, your healthcare provider will carefully monitor your blood count.\nCan dermatitis herpetiformis be prevented?\nThere is no known way to prevent this disease. You may be able to prevent complications by avoiding foods that contain gluten. Although difficult, sticking to a gluten-free diet can reduce the amount of medicines needed to manage the disease.\nWhat are the complications of dermatitis herpetiformis?\nPeople with DH often have celiac disease, which may develop into intestinal cancer. Thyroid disease may also develop.\nLiving with dermatitis herpetiformis\nIt is important to follow your healthcare provider’s recommendations about a gluten-free diet and medicines. Iodine and some nonsteroidal anti-inflammatory medicines (NSAIDs) can trigger the condition. So, you may be told to avoid iodized salt and certain NSAIDs.\nWhen should I call my healthcare provider?\nIf your symptoms worsen or you develop new symptoms, call your healthcare provider.\nKey points about dermatitis herpetiformis\nDermatitis herpetiformis (DH) is an intensely itchy skin disease. It causes clusters of small blisters and small bumps.\nDH is caused by a sensitivity to gluten.\nThe symptoms of DH may clear when all gluten is cut from the diet.","attrs_markdown":"[Skip to Main Content](https:\/\/www.hopkinsmedicine.org\/health\/conditions-and-diseases\/dermatitis-herpetiformis#skip)\n\n[![Johns Hopkins Medicine](https:\/\/www.hopkinsmedicine.org\/-\/media\/images\/hopkins-medicine-logo-white-header.svg?iar=0&hash=C6173D209DB591FDF4EFE00B18C2FFE4)](https:\/\/www.hopkinsmedicine.org\/)\n\nJohns Hopkins Medicine  Menu\n\n- [Health](https:\/\/www.hopkinsmedicine.org\/health)\n- [School of Medicine](https:\/\/www.hopkinsmedicine.org\/som)\n- [Johns Hopkins Medicine Home](https:\/\/www.hopkinsmedicine.org\/)\n- [About](https:\/\/www.hopkinsmedicine.org\/about)\n- [Patient Care](https:\/\/www.hopkinsmedicine.org\/patient-care)\n- [Research](https:\/\/www.hopkinsmedicine.org\/research)\n\n- [MyChart](https:\/\/mychart.hopkinsmedicine.org\/)\n- [Schedule an Appointment](https:\/\/www.hopkinsmedicine.org\/patient-care\/johns-hopkins-medicine-request-appointment)\n- [Find a Doctor](https:\/\/www.hopkinsmedicine.org\/profiles)\n- [Find a Clinical Trial](https:\/\/www.hopkinsmedicine.org\/clinical-trials)\n- [Pay Your Bill](https:\/\/www.hopkinsmedicine.org\/patient-care\/patients-visitors\/billing-insurance\/pay-bill)\n- [Employment](https:\/\/www.hopkinsmedicine.org\/employment)\n\nClose\n\nSearch\n\nClose\n\n[MyChart Login MyChart](https:\/\/mychart.hopkinsmedicine.org\/)\n\n[Home](https:\/\/www.hopkinsmedicine.org\/) [Health Home](https:\/\/www.hopkinsmedicine.org\/health) [Conditions and Diseases](https:\/\/www.hopkinsmedicine.org\/health\/conditions-and-diseases)\n\n# Dermatitis Herpetiformis\n[Skin](https:\/\/www.hopkinsmedicine.org\/health\/skin)\n\n## What is dermatitis herpetiformis (DH)?\nDermatitis herpetiformis (DH) is an intensely itchy skin disease. It causes clusters of small blisters and bumps. It typically affects people in their 30s to 50s, but it can happen at any age. This lifelong condition affects more men than women.\n\n## What causes dermatitis herpetiformis?\nDespite its name, the [herpes virus](https:\/\/www.hopkinsmedicine.org\/healthlibrary\/conditions\/adult\/infectious_diseases\/Herpes_HSV-1_and_HSV-2_22,HerpesHSV-1andHSV-2) does not cause DH.\n\nDH is caused by a sensitivity or intolerance to gluten. Gluten is a protein found in wheat and grains. When you have DH and eat food with gluten, the gluten combines with an antibody from the intestines. As the gluten and antibody circulate in the blood, they clog small blood vessels in the skin. This is what causes the rash.\n\n## Who is at risk for dermatitis herpetiformis?\nDH is found most often in people of northern European heritage. The following diseases increase your risk of DH:\n\n- Autoimmune thyroid disease\n- [Celiac disease](https:\/\/www.hopkinsmedicine.org\/healthlibrary\/conditions\/adult\/digestive_disorders\/celiac_disease_85,P00361)\n- [Type 1 diabetes](https:\/\/www.hopkinsmedicine.org\/healthlibrary\/conditions\/adult\/endocrinology\/type_1_diabetes_85,p00355)\n- [Sjögren syndrome](https:\/\/www.hopkinsmedicine.org\/healthlibrary\/conditions\/adult\/arthritis_and_other_rheumatic_diseases\/Sjogrens_Syndrome_22,SjogrensSyndrome)\n- [Lupus](https:\/\/www.hopkinsmedicine.org\/healthlibrary\/conditions\/adult\/arthritis_and_other_rheumatic_diseases\/systemic_lupus_erythematosus_lupus_85,P00058)\n## What are the symptoms of dermatitis herpetiformis?\nThe following are the most common symptoms of DH. However, each person may experience symptoms differently. Symptoms may include:\n\n- Clusters of itchy, small blisters and bumps, mostly on the elbows, lower back, buttocks, knees, and back of the head\n- Severe itching and burning\n- Erosions and scratches are often seen on the skin\n\nThe gut may also have the same allergy to gluten. This is known as celiac disease. You can have both DH and celiac. Some cases of celiac become cancerous. Because of this, if you have celiac disease, it is important to see a healthcare provider who specializes in the stomach and intestines (a gastroenterologist).\n\nThe symptoms of DH may look like other skin conditions. Always talk with your healthcare provider for a diagnosis.\n\n## How is dermatitis herpetiformis diagnosed?\nIn addition to a medical history and physical exam, DH is usually confirmed with a skin biopsy and a specialized type of immunofluorescent stain that helps to detect the IgA antibodies. You may also have a blood tests to find certain antibodies.\n\n## How is dermatitis herpetiformis treated?\nDH may be well-controlled with treatment. Specific treatment will be determined by your healthcare provider based on:\n\n- Your age, overall health, and medical history\n- Extent of the condition\n- Your tolerance for specific medicines, procedures, and therapies\n- Expectation for the course of the condition\n- Your opinion or preference\n\nThe symptoms of DH may go away if you cut all gluten from your diet. Healing may take several weeks to months. Your healthcare provider may also prescribe a medicine called dapsone. This medicine suppresses the skin response and may improve symptoms. However, the medicine has some side effects, including anemia. If dapsone is prescribed for you, your healthcare provider will carefully monitor your blood count.\n\n## Can dermatitis herpetiformis be prevented?\nThere is no known way to prevent this disease. You may be able to prevent complications by avoiding foods that contain gluten. Although difficult, sticking to a gluten-free diet can reduce the amount of medicines needed to manage the disease.\n\n## What are the complications of dermatitis herpetiformis?\nPeople with DH often have celiac disease, which may develop into intestinal cancer. Thyroid disease may also develop.\n\n## Living with dermatitis herpetiformis\nIt is important to follow your healthcare provider’s recommendations about a gluten-free diet and medicines. Iodine and some nonsteroidal anti-inflammatory medicines (NSAIDs) can trigger the condition. So, you may be told to avoid iodized salt and certain NSAIDs.\n\n## When should I call my healthcare provider?\nIf your symptoms worsen or you develop new symptoms, call your healthcare provider.\n\n## Key points about dermatitis herpetiformis\n- Dermatitis herpetiformis (DH) is an intensely itchy skin disease. It causes clusters of small blisters and small bumps.\n- DH is caused by a sensitivity to gluten.\n- The symptoms of DH may clear when all gluten is cut from the diet.\n\n## Find a Doctor\nSpecializing In:\n\n- [Dermatology](https:\/\/profiles.hopkinsmedicine.org\/search?unified=\"Dermatology\"&sort=networks%2Crelevance%2Cavailability_density_best)\n- [Pediatric Dermatology](https:\/\/profiles.hopkinsmedicine.org\/search?unified=\"Pediatric+Dermatology\"&sort=networks%2Crelevance%2Cavailability_density_best)\n\n## Find a Treatment Center\n- [Dermatology](http:\/\/www.hopkinsmedicine.org\/dermatology)\n\nFind Additional Treatment Centers at:\n\n- [Howard County Medical Center](https:\/\/www.hopkinsmedicine.org\/johns-hopkins-howard-county)\n- [Sibley Memorial Hospital](https:\/\/www.hopkinsmedicine.org\/sibley-memorial-hospital)\n- [Suburban Hospital](https:\/\/www.hopkinsmedicine.org\/suburban-hospital)\n\n## Related\n![Interview with Joseph Perno, M.D.](https:\/\/www.hopkinsmedicine.org\/-\/media\/images\/health\/1_-conditions\/skin\/common-rashes-in-kids-teaser.jpg?h=320&iar=0&w=560&hash=E0356D143E43B436504C228A5FE45FDB)\n\n- [Common Pediatric Rashes](https:\/\/www.hopkinsmedicine.org\/health\/conditions-and-diseases\/skin-conditions\/common-pediatric-rashes)\n- [What Is Hand, Foot and Mouth Disease?](https:\/\/www.hopkinsmedicine.org\/health\/conditions-and-diseases\/skin-conditions\/what-is-hand-foot-and-mouth-disease)\n- [Folliculitis, Boils and Carbuncles](https:\/\/www.hopkinsmedicine.org\/health\/conditions-and-diseases\/folliculitis-boils-and-carbuncles)\n- [Merkel Cell Carcinoma](https:\/\/www.hopkinsmedicine.org\/health\/conditions-and-diseases\/merkel-cell-carcinoma)\n\n![](https:\/\/www.hopkinsmedicine.org\/-\/media\/project\/jhm\/icons\/jhmcalendar.svg?iar=0&hash=9758E8BED5D3E0BEC4202D7B92AC5624)\n\n## Request an Appointment\n[Find a Doctor](https:\/\/www.hopkinsmedicine.org\/profiles)\n\n- [410-955-5000](tel:410-955-5000) Maryland\n- [855-695-4872](tel:855-695-4872) Outside of Maryland\n- [\\+1-410-502-7683](tel:+1-410-502-7683) International\n\n[Find a Doctor](https:\/\/www.hopkinsmedicine.org\/profiles)\n\nSee More\n\n## Find a Doctor\nSpecializing In:\n\n- [Dermatology](https:\/\/profiles.hopkinsmedicine.org\/search?unified=\"Dermatology\"&sort=networks%2Crelevance%2Cavailability_density_best)\n- [Pediatric Dermatology](https:\/\/profiles.hopkinsmedicine.org\/search?unified=\"Pediatric+Dermatology\"&sort=networks%2Crelevance%2Cavailability_density_best)\n\n## Find a Treatment Center\n- [Dermatology](http:\/\/www.hopkinsmedicine.org\/dermatology)\n\nFind Additional Treatment Centers at:\n\n- [Howard County Medical Center](https:\/\/www.hopkinsmedicine.org\/johns-hopkins-howard-county)\n- [Sibley Memorial Hospital](https:\/\/www.hopkinsmedicine.org\/sibley-memorial-hospital)\n- [Suburban Hospital](https:\/\/www.hopkinsmedicine.org\/suburban-hospital)\n\n## Related\n- [![Interview with Joseph Perno, M.D.](https:\/\/www.hopkinsmedicine.org\/-\/media\/images\/health\/1_-conditions\/skin\/common-rashes-in-kids-teaser.jpg?h=217&iar=0&mh=260&mw=380&w=380&hash=6FD21AE05AA53319B5D63625AD81A89B) Skin Common Pediatric Rashes](https:\/\/www.hopkinsmedicine.org\/health\/conditions-and-diseases\/skin-conditions\/common-pediatric-rashes)\n- [![Ebony Hunter, M.D.](https:\/\/www.hopkinsmedicine.org\/-\/media\/images\/health\/1_-conditions\/skin\/what-is-hand-foot-and-mouth-disease-teaser.jpg?h=217&iar=0&mh=260&mw=380&w=380&hash=C3E0193052A4055D4E3A895A17BC0694) Skin What Is Hand, Foot and Mouth Disease?](https:\/\/www.hopkinsmedicine.org\/health\/conditions-and-diseases\/skin-conditions\/what-is-hand-foot-and-mouth-disease)\n- [![Woman with a large boil on her chin](https:\/\/www.hopkinsmedicine.org\/-\/media\/images\/health\/1_-conditions\/skin\/patient-with-large-boil-on-chin-teaser.jpg?h=217&iar=0&mh=260&mw=380&w=380&hash=85CE0F0CFDF5F0109F1E46C0BADA1259) Skin Folliculitis, Boils and Carbuncles](https:\/\/www.hopkinsmedicine.org\/health\/conditions-and-diseases\/folliculitis-boils-and-carbuncles)\n\n## Related Topics\n- [Skin](https:\/\/www.hopkinsmedicine.org\/health\/skin)\n\n## [![Johns Hopkins Medicine](https:\/\/www.hopkinsmedicine.org\/-\/media\/images\/hopkins-nav-logo.svg)](https:\/\/www.hopkinsmedicine.org\/)\nLanguage Assistance Available:\n\n- [Español](https:\/\/www.hopkinsmedicine.org\/patient-care\/patients-visitors\/language-assistance-services#spanish)\n- [አማርኛ](https:\/\/www.hopkinsmedicine.org\/patient-care\/patients-visitors\/language-assistance-services#amharic)\n- [繁體中文](https:\/\/www.hopkinsmedicine.org\/patient-care\/patients-visitors\/language-assistance-services#chinese)\n- [Français](https:\/\/www.hopkinsmedicine.org\/patient-care\/patients-visitors\/language-assistance-services#french)\n- [Tagalog](https:\/\/www.hopkinsmedicine.org\/patient-care\/patients-visitors\/language-assistance-services#tagalog)\n- [Русский](https:\/\/www.hopkinsmedicine.org\/patient-care\/patients-visitors\/language-assistance-services#russian)\n- [Português](https:\/\/www.hopkinsmedicine.org\/patient-care\/patients-visitors\/language-assistance-services#portugese)\n- [Italiano](https:\/\/www.hopkinsmedicine.org\/patient-care\/patients-visitors\/language-assistance-services#italian)\n- [Tiếng Việt](https:\/\/www.hopkinsmedicine.org\/patient-care\/patients-visitors\/language-assistance-services#vietnamese)\n- [Ɓàsɔ́ɔ̀-wùɖù-po-nyɔ̀](https:\/\/www.hopkinsmedicine.org\/patient-care\/patients-visitors\/language-assistance-services#KruBassa)\n- [Igbo asusu](https:\/\/www.hopkinsmedicine.org\/patient-care\/patients-visitors\/language-assistance-services#ibo)\n- [èdè Yorùbá](https:\/\/www.hopkinsmedicine.org\/patient-care\/patients-visitors\/language-assistance-services#Yoruba)\n- [বাংলা](https:\/\/www.hopkinsmedicine.org\/patient-care\/patients-visitors\/language-assistance-services#Bengali)\n- [日本語](https:\/\/www.hopkinsmedicine.org\/patient-care\/patients-visitors\/language-assistance-services#japanese)\n- [한국어](https:\/\/www.hopkinsmedicine.org\/patient-care\/patients-visitors\/language-assistance-services#korean)\n- [Kreyòl Ayisyen](https:\/\/www.hopkinsmedicine.org\/patient-care\/patients-visitors\/language-assistance-services#Creole)\n- [العربية](https:\/\/www.hopkinsmedicine.org\/patient-care\/patients-visitors\/language-assistance-services#Arabic)\n- [Deutsch](https:\/\/www.hopkinsmedicine.org\/patient-care\/patients-visitors\/language-assistance-services#German)\n- [Polski](https:\/\/www.hopkinsmedicine.org\/patient-care\/patients-visitors\/language-assistance-services#Polish)\n- [Ελληνικά](https:\/\/www.hopkinsmedicine.org\/patient-care\/patients-visitors\/language-assistance-services#Greek)\n- [ગુજરાતી](https:\/\/www.hopkinsmedicine.org\/patient-care\/patients-visitors\/language-assistance-services#Gujarati)\n- [ภาษาไทย](https:\/\/www.hopkinsmedicine.org\/patient-care\/patients-visitors\/language-assistance-services#Thai)\n- [اُردُو](https:\/\/www.hopkinsmedicine.org\/patient-care\/patients-visitors\/language-assistance-services#Urdu)\n- [فارسی](https:\/\/www.hopkinsmedicine.org\/patient-care\/patients-visitors\/language-assistance-services#Persian)\n- [हिंदी](https:\/\/www.hopkinsmedicine.org\/patient-care\/patients-visitors\/language-assistance-services#Hindi)\n- [Deitsch](https:\/\/www.hopkinsmedicine.org\/patient-care\/patients-visitors\/language-assistance-services#PennDutch)\n- [ខ្មែរ](https:\/\/www.hopkinsmedicine.org\/patient-care\/patients-visitors\/language-assistance-services#Cambodian)\n\nContact & Privacy Information\n\n[Contact Johns Hopkins Medicine](https:\/\/www.hopkinsmedicine.org\/patient-care\/patients-visitors\/contact-us)\n\n[Price Transparency](https:\/\/www.hopkinsmedicine.org\/patient-care\/patients-visitors\/billing-insurance\/pay-bill\/charges-fees) \\| [Patient Care Locations](https:\/\/www.hopkinsmedicine.org\/patient-care\/locations)\n\n[Notice of Privacy Practices](https:\/\/www.hopkinsmedicine.org\/patient-privacy-information) \\| [Privacy Statement](https:\/\/it.johnshopkins.edu\/policies\/privacystatement)\n\n[Terms & Conditions of Use](https:\/\/www.hopkinsmedicine.org\/terms-and-conditions-of-use) \\| [Non-Discrimination Notice](https:\/\/www.hopkinsmedicine.org\/patient-care\/patients-visitors\/non-discrimination-notice)\n\n[Manage Cookie Preferences]()\n\n[Follow Johns Hopkins Medicine on Facebook](https:\/\/www.facebook.com\/Johns.Hopkins.Medicine)\n\n[Follow Johns Hopkins Medicine on X](https:\/\/x.com\/HopkinsMedicine)\n\n[Follow Johns Hopkins Medicine on Linkedin](https:\/\/www.linkedin.com\/company\/johns-hopkins-medicine)\n\n[Follow Johns Hopkins Medicine on Instagram](https:\/\/www.instagram.com\/HopkinsMedicine\/)\n\n[Follow Johns Hopkins Medicine on YouTube](https:\/\/www.youtube.com\/user\/JohnsHopkinsMedicine?sub_confirmation=1)\n\n[Follow Johns Hopkins Medicine on Weibo](https:\/\/www.weibo.com\/hopkinsmedicine)\n\nCopyright © 2026 The Johns Hopkins University, The Johns Hopkins Hospital, and Johns Hopkins Health System. All rights reserved.","attrs_readable_markdown":"[Skin](https:\/\/www.hopkinsmedicine.org\/health\/skin)\n\n## What is dermatitis herpetiformis (DH)?\nDermatitis herpetiformis (DH) is an intensely itchy skin disease. It causes clusters of small blisters and bumps. It typically affects people in their 30s to 50s, but it can happen at any age. This lifelong condition affects more men than women.\n\n## What causes dermatitis herpetiformis?\nDespite its name, the [herpes virus](https:\/\/www.hopkinsmedicine.org\/healthlibrary\/conditions\/adult\/infectious_diseases\/Herpes_HSV-1_and_HSV-2_22,HerpesHSV-1andHSV-2) does not cause DH.\n\nDH is caused by a sensitivity or intolerance to gluten. Gluten is a protein found in wheat and grains. When you have DH and eat food with gluten, the gluten combines with an antibody from the intestines. As the gluten and antibody circulate in the blood, they clog small blood vessels in the skin. This is what causes the rash.\n\n## Who is at risk for dermatitis herpetiformis?\nDH is found most often in people of northern European heritage. The following diseases increase your risk of DH:\n\n- Autoimmune thyroid disease\n- [Celiac disease](https:\/\/www.hopkinsmedicine.org\/healthlibrary\/conditions\/adult\/digestive_disorders\/celiac_disease_85,P00361)\n- [Type 1 diabetes](https:\/\/www.hopkinsmedicine.org\/healthlibrary\/conditions\/adult\/endocrinology\/type_1_diabetes_85,p00355)\n- [Sjögren syndrome](https:\/\/www.hopkinsmedicine.org\/healthlibrary\/conditions\/adult\/arthritis_and_other_rheumatic_diseases\/Sjogrens_Syndrome_22,SjogrensSyndrome)\n- [Lupus](https:\/\/www.hopkinsmedicine.org\/healthlibrary\/conditions\/adult\/arthritis_and_other_rheumatic_diseases\/systemic_lupus_erythematosus_lupus_85,P00058)\n## What are the symptoms of dermatitis herpetiformis?\nThe following are the most common symptoms of DH. However, each person may experience symptoms differently. Symptoms may include:\n\n- Clusters of itchy, small blisters and bumps, mostly on the elbows, lower back, buttocks, knees, and back of the head\n- Severe itching and burning\n- Erosions and scratches are often seen on the skin\n\nThe gut may also have the same allergy to gluten. This is known as celiac disease. You can have both DH and celiac. Some cases of celiac become cancerous. Because of this, if you have celiac disease, it is important to see a healthcare provider who specializes in the stomach and intestines (a gastroenterologist).\n\nThe symptoms of DH may look like other skin conditions. Always talk with your healthcare provider for a diagnosis.\n\n## How is dermatitis herpetiformis diagnosed?\nIn addition to a medical history and physical exam, DH is usually confirmed with a skin biopsy and a specialized type of immunofluorescent stain that helps to detect the IgA antibodies. You may also have a blood tests to find certain antibodies.\n\n## How is dermatitis herpetiformis treated?\nDH may be well-controlled with treatment. Specific treatment will be determined by your healthcare provider based on:\n\n- Your age, overall health, and medical history\n- Extent of the condition\n- Your tolerance for specific medicines, procedures, and therapies\n- Expectation for the course of the condition\n- Your opinion or preference\n\nThe symptoms of DH may go away if you cut all gluten from your diet. Healing may take several weeks to months. Your healthcare provider may also prescribe a medicine called dapsone. This medicine suppresses the skin response and may improve symptoms. However, the medicine has some side effects, including anemia. If dapsone is prescribed for you, your healthcare provider will carefully monitor your blood count.\n\n## Can dermatitis herpetiformis be prevented?\nThere is no known way to prevent this disease. You may be able to prevent complications by avoiding foods that contain gluten. Although difficult, sticking to a gluten-free diet can reduce the amount of medicines needed to manage the disease.\n\n## What are the complications of dermatitis herpetiformis?\nPeople with DH often have celiac disease, which may develop into intestinal cancer. Thyroid disease may also develop.\n\n## Living with dermatitis herpetiformis\nIt is important to follow your healthcare provider’s recommendations about a gluten-free diet and medicines. Iodine and some nonsteroidal anti-inflammatory medicines (NSAIDs) can trigger the condition. So, you may be told to avoid iodized salt and certain NSAIDs.\n\n## When should I call my healthcare provider?\nIf your symptoms worsen or you develop new symptoms, call your healthcare provider.\n\n## Key points about dermatitis herpetiformis\n- Dermatitis herpetiformis (DH) is an intensely itchy skin disease. It causes clusters of small blisters and small bumps.\n- DH is caused by a sensitivity to gluten.\n- The symptoms of DH may clear when all gluten is cut from the diet.","meta_canonical":null,"ml_categories_json":"{\"\/Health\":999,\"\/Health\/Health_Conditions\":981,\"\/Health\/Health_Conditions\/Skin_Conditions\":975}","ml_types_json":"{\"\/Article\":678,\"\/Article\/Definitions\":378}","ml_intent_types_json":"{\"Informational\":983,\"Commercial\":299,\"Transactional\":146}","meta_language":"en","attrs_author":null,"attrs_publish_time":1574121600,"attrs_original_publish_time":1554385018,"attrs_is_republished":1,"attrs_nr_words":"926","attrs_boilerpipe_nr_words":"632","body_ext_links_number":8,"body_int_links_number":47,"meta_nofollow":0,"meta_noarchive":0,"props_was_rendered":1,"src_redirect":"","download_time_msec":28,"download_ttfb_msec":28,"download_size":9439}

3. Robots.txt Check

Query:

Response:

4. Spam/Ban Check

Query:

Response:

5. Seen Status Check

ℹ️ Skipped - page is already crawled

📄

INDEXABLE

✅

CRAWLED

5 days ago

🤖

ROBOTS ALLOWED

Page Info Filters

Filter	Status	Condition	Details
HTTP status	PASS	`download_http_code = 200`	HTTP 200
Age cutoff	PASS	`download_stamp > now() - 6 MONTH`	0.2 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.hopkinsmedicine.org/health/conditions-and-diseases/dermatitis-herpetiformis

Last Crawled

2026-04-17 22:29:30 (5 days ago)

First Indexed

2019-04-04 13:36:58 (7 years ago)

HTTP Status Code

200

Content

Meta Title

Dermatitis Herpetiformis | Johns Hopkins Medicine

Meta Description

Dermatitis herpetiformis (DH) is an intensely itchy skin disease. It causes clusters of small blisters and bumps.

Meta Canonical

null

Boilerpipe Text

Skin What is dermatitis herpetiformis (DH)? Dermatitis herpetiformis (DH) is an intensely itchy skin disease. It causes clusters of small blisters and bumps. It typically affects people in their 30s to 50s, but it can happen at any age. This lifelong condition affects more men than women. What causes dermatitis herpetiformis? Despite its name, the herpes virus does not cause DH. DH is caused by a sensitivity or intolerance to gluten. Gluten is a protein found in wheat and grains. When you have DH and eat food with gluten, the gluten combines with an antibody from the intestines. As the gluten and antibody circulate in the blood, they clog small blood vessels in the skin. This is what causes the rash. Who is at risk for dermatitis herpetiformis? DH is found most often in people of northern European heritage. The following diseases increase your risk of DH: Autoimmune thyroid disease Celiac disease Type 1 diabetes Sjögren syndrome Lupus What are the symptoms of dermatitis herpetiformis? The following are the most common symptoms of DH. However, each person may experience symptoms differently. Symptoms may include: Clusters of itchy, small blisters and bumps, mostly on the elbows, lower back, buttocks, knees, and back of the head Severe itching and burning Erosions and scratches are often seen on the skin The gut may also have the same allergy to gluten. This is known as celiac disease. You can have both DH and celiac. Some cases of celiac become cancerous. Because of this, if you have celiac disease, it is important to see a healthcare provider who specializes in the stomach and intestines (a gastroenterologist). The symptoms of DH may look like other skin conditions. Always talk with your healthcare provider for a diagnosis. How is dermatitis herpetiformis diagnosed? In addition to a medical history and physical exam, DH is usually confirmed with a skin biopsy and a specialized type of immunofluorescent stain that helps to detect the IgA antibodies. You may also have a blood tests to find certain antibodies. How is dermatitis herpetiformis treated? DH may be well-controlled with treatment. Specific treatment will be determined by your healthcare provider based on: Your age, overall health, and medical history Extent of the condition Your tolerance for specific medicines, procedures, and therapies Expectation for the course of the condition Your opinion or preference The symptoms of DH may go away if you cut all gluten from your diet. Healing may take several weeks to months. Your healthcare provider may also prescribe a medicine called dapsone. This medicine suppresses the skin response and may improve symptoms. However, the medicine has some side effects, including anemia. If dapsone is prescribed for you, your healthcare provider will carefully monitor your blood count. Can dermatitis herpetiformis be prevented? There is no known way to prevent this disease. You may be able to prevent complications by avoiding foods that contain gluten. Although difficult, sticking to a gluten-free diet can reduce the amount of medicines needed to manage the disease. What are the complications of dermatitis herpetiformis? People with DH often have celiac disease, which may develop into intestinal cancer. Thyroid disease may also develop. Living with dermatitis herpetiformis It is important to follow your healthcare provider’s recommendations about a gluten-free diet and medicines. Iodine and some nonsteroidal anti-inflammatory medicines (NSAIDs) can trigger the condition. So, you may be told to avoid iodized salt and certain NSAIDs. When should I call my healthcare provider? If your symptoms worsen or you develop new symptoms, call your healthcare provider. Key points about dermatitis herpetiformis Dermatitis herpetiformis (DH) is an intensely itchy skin disease. It causes clusters of small blisters and small bumps. DH is caused by a sensitivity to gluten. The symptoms of DH may clear when all gluten is cut from the diet.

Markdown

[Skip to Main Content](https://www.hopkinsmedicine.org/health/conditions-and-diseases/dermatitis-herpetiformis#skip) [![Johns Hopkins Medicine](https://www.hopkinsmedicine.org/-/media/images/hopkins-medicine-logo-white-header.svg?iar=0&hash=C6173D209DB591FDF4EFE00B18C2FFE4)](https://www.hopkinsmedicine.org/) Johns Hopkins Medicine Menu - [Health](https://www.hopkinsmedicine.org/health) - [School of Medicine](https://www.hopkinsmedicine.org/som) - [Johns Hopkins Medicine Home](https://www.hopkinsmedicine.org/) - [About](https://www.hopkinsmedicine.org/about) - [Patient Care](https://www.hopkinsmedicine.org/patient-care) - [Research](https://www.hopkinsmedicine.org/research) - [MyChart](https://mychart.hopkinsmedicine.org/) - [Schedule an Appointment](https://www.hopkinsmedicine.org/patient-care/johns-hopkins-medicine-request-appointment) - [Find a Doctor](https://www.hopkinsmedicine.org/profiles) - [Find a Clinical Trial](https://www.hopkinsmedicine.org/clinical-trials) - [Pay Your Bill](https://www.hopkinsmedicine.org/patient-care/patients-visitors/billing-insurance/pay-bill) - [Employment](https://www.hopkinsmedicine.org/employment) Close Search Close [MyChart Login MyChart](https://mychart.hopkinsmedicine.org/) [Home](https://www.hopkinsmedicine.org/) [Health Home](https://www.hopkinsmedicine.org/health) [Conditions and Diseases](https://www.hopkinsmedicine.org/health/conditions-and-diseases) # Dermatitis Herpetiformis [Skin](https://www.hopkinsmedicine.org/health/skin) ## What is dermatitis herpetiformis (DH)? Dermatitis herpetiformis (DH) is an intensely itchy skin disease. It causes clusters of small blisters and bumps. It typically affects people in their 30s to 50s, but it can happen at any age. This lifelong condition affects more men than women. ## What causes dermatitis herpetiformis? Despite its name, the [herpes virus](https://www.hopkinsmedicine.org/healthlibrary/conditions/adult/infectious_diseases/Herpes_HSV-1_and_HSV-2_22,HerpesHSV-1andHSV-2) does not cause DH. DH is caused by a sensitivity or intolerance to gluten. Gluten is a protein found in wheat and grains. When you have DH and eat food with gluten, the gluten combines with an antibody from the intestines. As the gluten and antibody circulate in the blood, they clog small blood vessels in the skin. This is what causes the rash. ## Who is at risk for dermatitis herpetiformis? DH is found most often in people of northern European heritage. The following diseases increase your risk of DH: - Autoimmune thyroid disease - [Celiac disease](https://www.hopkinsmedicine.org/healthlibrary/conditions/adult/digestive_disorders/celiac_disease_85,P00361) - [Type 1 diabetes](https://www.hopkinsmedicine.org/healthlibrary/conditions/adult/endocrinology/type_1_diabetes_85,p00355) - [Sjögren syndrome](https://www.hopkinsmedicine.org/healthlibrary/conditions/adult/arthritis_and_other_rheumatic_diseases/Sjogrens_Syndrome_22,SjogrensSyndrome) - [Lupus](https://www.hopkinsmedicine.org/healthlibrary/conditions/adult/arthritis_and_other_rheumatic_diseases/systemic_lupus_erythematosus_lupus_85,P00058) ## What are the symptoms of dermatitis herpetiformis? The following are the most common symptoms of DH. However, each person may experience symptoms differently. Symptoms may include: - Clusters of itchy, small blisters and bumps, mostly on the elbows, lower back, buttocks, knees, and back of the head - Severe itching and burning - Erosions and scratches are often seen on the skin The gut may also have the same allergy to gluten. This is known as celiac disease. You can have both DH and celiac. Some cases of celiac become cancerous. Because of this, if you have celiac disease, it is important to see a healthcare provider who specializes in the stomach and intestines (a gastroenterologist). The symptoms of DH may look like other skin conditions. Always talk with your healthcare provider for a diagnosis. ## How is dermatitis herpetiformis diagnosed? In addition to a medical history and physical exam, DH is usually confirmed with a skin biopsy and a specialized type of immunofluorescent stain that helps to detect the IgA antibodies. You may also have a blood tests to find certain antibodies. ## How is dermatitis herpetiformis treated? DH may be well-controlled with treatment. Specific treatment will be determined by your healthcare provider based on: - Your age, overall health, and medical history - Extent of the condition - Your tolerance for specific medicines, procedures, and therapies - Expectation for the course of the condition - Your opinion or preference The symptoms of DH may go away if you cut all gluten from your diet. Healing may take several weeks to months. Your healthcare provider may also prescribe a medicine called dapsone. This medicine suppresses the skin response and may improve symptoms. However, the medicine has some side effects, including anemia. If dapsone is prescribed for you, your healthcare provider will carefully monitor your blood count. ## Can dermatitis herpetiformis be prevented? There is no known way to prevent this disease. You may be able to prevent complications by avoiding foods that contain gluten. Although difficult, sticking to a gluten-free diet can reduce the amount of medicines needed to manage the disease. ## What are the complications of dermatitis herpetiformis? People with DH often have celiac disease, which may develop into intestinal cancer. Thyroid disease may also develop. ## Living with dermatitis herpetiformis It is important to follow your healthcare provider’s recommendations about a gluten-free diet and medicines. Iodine and some nonsteroidal anti-inflammatory medicines (NSAIDs) can trigger the condition. So, you may be told to avoid iodized salt and certain NSAIDs. ## When should I call my healthcare provider? If your symptoms worsen or you develop new symptoms, call your healthcare provider. ## Key points about dermatitis herpetiformis - Dermatitis herpetiformis (DH) is an intensely itchy skin disease. It causes clusters of small blisters and small bumps. - DH is caused by a sensitivity to gluten. - The symptoms of DH may clear when all gluten is cut from the diet. ## Find a Doctor Specializing In: - [Dermatology](https://profiles.hopkinsmedicine.org/search?unified="Dermatology"&sort=networks%2Crelevance%2Cavailability_density_best) - [Pediatric Dermatology](https://profiles.hopkinsmedicine.org/search?unified="Pediatric+Dermatology"&sort=networks%2Crelevance%2Cavailability_density_best) ## Find a Treatment Center - [Dermatology](http://www.hopkinsmedicine.org/dermatology) Find Additional Treatment Centers at: - [Howard County Medical Center](https://www.hopkinsmedicine.org/johns-hopkins-howard-county) - [Sibley Memorial Hospital](https://www.hopkinsmedicine.org/sibley-memorial-hospital) - [Suburban Hospital](https://www.hopkinsmedicine.org/suburban-hospital) ## Related ![Interview with Joseph Perno, M.D.](https://www.hopkinsmedicine.org/-/media/images/health/1_-conditions/skin/common-rashes-in-kids-teaser.jpg?h=320&iar=0&w=560&hash=E0356D143E43B436504C228A5FE45FDB) - [Common Pediatric Rashes](https://www.hopkinsmedicine.org/health/conditions-and-diseases/skin-conditions/common-pediatric-rashes) - [What Is Hand, Foot and Mouth Disease?](https://www.hopkinsmedicine.org/health/conditions-and-diseases/skin-conditions/what-is-hand-foot-and-mouth-disease) - [Folliculitis, Boils and Carbuncles](https://www.hopkinsmedicine.org/health/conditions-and-diseases/folliculitis-boils-and-carbuncles) - [Merkel Cell Carcinoma](https://www.hopkinsmedicine.org/health/conditions-and-diseases/merkel-cell-carcinoma) ![](https://www.hopkinsmedicine.org/-/media/project/jhm/icons/jhmcalendar.svg?iar=0&hash=9758E8BED5D3E0BEC4202D7B92AC5624) ## Request an Appointment [Find a Doctor](https://www.hopkinsmedicine.org/profiles) - [410-955-5000](tel:410-955-5000) Maryland - [855-695-4872](tel:855-695-4872) Outside of Maryland - [\+1-410-502-7683](tel:+1-410-502-7683) International [Find a Doctor](https://www.hopkinsmedicine.org/profiles) See More ## Find a Doctor Specializing In: - [Dermatology](https://profiles.hopkinsmedicine.org/search?unified="Dermatology"&sort=networks%2Crelevance%2Cavailability_density_best) - [Pediatric Dermatology](https://profiles.hopkinsmedicine.org/search?unified="Pediatric+Dermatology"&sort=networks%2Crelevance%2Cavailability_density_best) ## Find a Treatment Center - [Dermatology](http://www.hopkinsmedicine.org/dermatology) Find Additional Treatment Centers at: - [Howard County Medical Center](https://www.hopkinsmedicine.org/johns-hopkins-howard-county) - [Sibley Memorial Hospital](https://www.hopkinsmedicine.org/sibley-memorial-hospital) - [Suburban Hospital](https://www.hopkinsmedicine.org/suburban-hospital) ## Related - [![Interview with Joseph Perno, M.D.](https://www.hopkinsmedicine.org/-/media/images/health/1_-conditions/skin/common-rashes-in-kids-teaser.jpg?h=217&iar=0&mh=260&mw=380&w=380&hash=6FD21AE05AA53319B5D63625AD81A89B) Skin Common Pediatric Rashes](https://www.hopkinsmedicine.org/health/conditions-and-diseases/skin-conditions/common-pediatric-rashes) - [![Ebony Hunter, M.D.](https://www.hopkinsmedicine.org/-/media/images/health/1_-conditions/skin/what-is-hand-foot-and-mouth-disease-teaser.jpg?h=217&iar=0&mh=260&mw=380&w=380&hash=C3E0193052A4055D4E3A895A17BC0694) Skin What Is Hand, Foot and Mouth Disease?](https://www.hopkinsmedicine.org/health/conditions-and-diseases/skin-conditions/what-is-hand-foot-and-mouth-disease) - [![Woman with a large boil on her chin](https://www.hopkinsmedicine.org/-/media/images/health/1_-conditions/skin/patient-with-large-boil-on-chin-teaser.jpg?h=217&iar=0&mh=260&mw=380&w=380&hash=85CE0F0CFDF5F0109F1E46C0BADA1259) Skin Folliculitis, Boils and Carbuncles](https://www.hopkinsmedicine.org/health/conditions-and-diseases/folliculitis-boils-and-carbuncles) ## Related Topics - [Skin](https://www.hopkinsmedicine.org/health/skin) ## [![Johns Hopkins Medicine](https://www.hopkinsmedicine.org/-/media/images/hopkins-nav-logo.svg)](https://www.hopkinsmedicine.org/) Language Assistance Available: - [Español](https://www.hopkinsmedicine.org/patient-care/patients-visitors/language-assistance-services#spanish) - [አማርኛ](https://www.hopkinsmedicine.org/patient-care/patients-visitors/language-assistance-services#amharic) - [繁體中文](https://www.hopkinsmedicine.org/patient-care/patients-visitors/language-assistance-services#chinese) - [Français](https://www.hopkinsmedicine.org/patient-care/patients-visitors/language-assistance-services#french) - [Tagalog](https://www.hopkinsmedicine.org/patient-care/patients-visitors/language-assistance-services#tagalog) - [Русский](https://www.hopkinsmedicine.org/patient-care/patients-visitors/language-assistance-services#russian) - [Português](https://www.hopkinsmedicine.org/patient-care/patients-visitors/language-assistance-services#portugese) - [Italiano](https://www.hopkinsmedicine.org/patient-care/patients-visitors/language-assistance-services#italian) - [Tiếng Việt](https://www.hopkinsmedicine.org/patient-care/patients-visitors/language-assistance-services#vietnamese) - [Ɓàsɔ́ɔ̀-wùɖù-po-nyɔ̀](https://www.hopkinsmedicine.org/patient-care/patients-visitors/language-assistance-services#KruBassa) - [Igbo asusu](https://www.hopkinsmedicine.org/patient-care/patients-visitors/language-assistance-services#ibo) - [èdè Yorùbá](https://www.hopkinsmedicine.org/patient-care/patients-visitors/language-assistance-services#Yoruba) - [বাংলা](https://www.hopkinsmedicine.org/patient-care/patients-visitors/language-assistance-services#Bengali) - [日本語](https://www.hopkinsmedicine.org/patient-care/patients-visitors/language-assistance-services#japanese) - [한국어](https://www.hopkinsmedicine.org/patient-care/patients-visitors/language-assistance-services#korean) - [Kreyòl Ayisyen](https://www.hopkinsmedicine.org/patient-care/patients-visitors/language-assistance-services#Creole) - [العربية](https://www.hopkinsmedicine.org/patient-care/patients-visitors/language-assistance-services#Arabic) - [Deutsch](https://www.hopkinsmedicine.org/patient-care/patients-visitors/language-assistance-services#German) - [Polski](https://www.hopkinsmedicine.org/patient-care/patients-visitors/language-assistance-services#Polish) - [Ελληνικά](https://www.hopkinsmedicine.org/patient-care/patients-visitors/language-assistance-services#Greek) - [ગુજરાતી](https://www.hopkinsmedicine.org/patient-care/patients-visitors/language-assistance-services#Gujarati) - [ภาษาไทย](https://www.hopkinsmedicine.org/patient-care/patients-visitors/language-assistance-services#Thai) - [اُردُو](https://www.hopkinsmedicine.org/patient-care/patients-visitors/language-assistance-services#Urdu) - [فارسی](https://www.hopkinsmedicine.org/patient-care/patients-visitors/language-assistance-services#Persian) - [हिंदी](https://www.hopkinsmedicine.org/patient-care/patients-visitors/language-assistance-services#Hindi) - [Deitsch](https://www.hopkinsmedicine.org/patient-care/patients-visitors/language-assistance-services#PennDutch) - [ខ្មែរ](https://www.hopkinsmedicine.org/patient-care/patients-visitors/language-assistance-services#Cambodian) Contact & Privacy Information [Contact Johns Hopkins Medicine](https://www.hopkinsmedicine.org/patient-care/patients-visitors/contact-us) [Price Transparency](https://www.hopkinsmedicine.org/patient-care/patients-visitors/billing-insurance/pay-bill/charges-fees) \| [Patient Care Locations](https://www.hopkinsmedicine.org/patient-care/locations) [Notice of Privacy Practices](https://www.hopkinsmedicine.org/patient-privacy-information) \| [Privacy Statement](https://it.johnshopkins.edu/policies/privacystatement) [Terms & Conditions of Use](https://www.hopkinsmedicine.org/terms-and-conditions-of-use) \| [Non-Discrimination Notice](https://www.hopkinsmedicine.org/patient-care/patients-visitors/non-discrimination-notice) [Manage Cookie Preferences]() [Follow Johns Hopkins Medicine on Facebook](https://www.facebook.com/Johns.Hopkins.Medicine) [Follow Johns Hopkins Medicine on X](https://x.com/HopkinsMedicine) [Follow Johns Hopkins Medicine on Linkedin](https://www.linkedin.com/company/johns-hopkins-medicine) [Follow Johns Hopkins Medicine on Instagram](https://www.instagram.com/HopkinsMedicine/) [Follow Johns Hopkins Medicine on YouTube](https://www.youtube.com/user/JohnsHopkinsMedicine?sub_confirmation=1) [Follow Johns Hopkins Medicine on Weibo](https://www.weibo.com/hopkinsmedicine) Copyright © 2026 The Johns Hopkins University, The Johns Hopkins Hospital, and Johns Hopkins Health System. All rights reserved.

Readable Markdown

[Skin](https://www.hopkinsmedicine.org/health/skin) ## What is dermatitis herpetiformis (DH)? Dermatitis herpetiformis (DH) is an intensely itchy skin disease. It causes clusters of small blisters and bumps. It typically affects people in their 30s to 50s, but it can happen at any age. This lifelong condition affects more men than women. ## What causes dermatitis herpetiformis? Despite its name, the [herpes virus](https://www.hopkinsmedicine.org/healthlibrary/conditions/adult/infectious_diseases/Herpes_HSV-1_and_HSV-2_22,HerpesHSV-1andHSV-2) does not cause DH. DH is caused by a sensitivity or intolerance to gluten. Gluten is a protein found in wheat and grains. When you have DH and eat food with gluten, the gluten combines with an antibody from the intestines. As the gluten and antibody circulate in the blood, they clog small blood vessels in the skin. This is what causes the rash. ## Who is at risk for dermatitis herpetiformis? DH is found most often in people of northern European heritage. The following diseases increase your risk of DH: - Autoimmune thyroid disease - [Celiac disease](https://www.hopkinsmedicine.org/healthlibrary/conditions/adult/digestive_disorders/celiac_disease_85,P00361) - [Type 1 diabetes](https://www.hopkinsmedicine.org/healthlibrary/conditions/adult/endocrinology/type_1_diabetes_85,p00355) - [Sjögren syndrome](https://www.hopkinsmedicine.org/healthlibrary/conditions/adult/arthritis_and_other_rheumatic_diseases/Sjogrens_Syndrome_22,SjogrensSyndrome) - [Lupus](https://www.hopkinsmedicine.org/healthlibrary/conditions/adult/arthritis_and_other_rheumatic_diseases/systemic_lupus_erythematosus_lupus_85,P00058) ## What are the symptoms of dermatitis herpetiformis? The following are the most common symptoms of DH. However, each person may experience symptoms differently. Symptoms may include: - Clusters of itchy, small blisters and bumps, mostly on the elbows, lower back, buttocks, knees, and back of the head - Severe itching and burning - Erosions and scratches are often seen on the skin The gut may also have the same allergy to gluten. This is known as celiac disease. You can have both DH and celiac. Some cases of celiac become cancerous. Because of this, if you have celiac disease, it is important to see a healthcare provider who specializes in the stomach and intestines (a gastroenterologist). The symptoms of DH may look like other skin conditions. Always talk with your healthcare provider for a diagnosis. ## How is dermatitis herpetiformis diagnosed? In addition to a medical history and physical exam, DH is usually confirmed with a skin biopsy and a specialized type of immunofluorescent stain that helps to detect the IgA antibodies. You may also have a blood tests to find certain antibodies. ## How is dermatitis herpetiformis treated? DH may be well-controlled with treatment. Specific treatment will be determined by your healthcare provider based on: - Your age, overall health, and medical history - Extent of the condition - Your tolerance for specific medicines, procedures, and therapies - Expectation for the course of the condition - Your opinion or preference The symptoms of DH may go away if you cut all gluten from your diet. Healing may take several weeks to months. Your healthcare provider may also prescribe a medicine called dapsone. This medicine suppresses the skin response and may improve symptoms. However, the medicine has some side effects, including anemia. If dapsone is prescribed for you, your healthcare provider will carefully monitor your blood count. ## Can dermatitis herpetiformis be prevented? There is no known way to prevent this disease. You may be able to prevent complications by avoiding foods that contain gluten. Although difficult, sticking to a gluten-free diet can reduce the amount of medicines needed to manage the disease. ## What are the complications of dermatitis herpetiformis? People with DH often have celiac disease, which may develop into intestinal cancer. Thyroid disease may also develop. ## Living with dermatitis herpetiformis It is important to follow your healthcare provider’s recommendations about a gluten-free diet and medicines. Iodine and some nonsteroidal anti-inflammatory medicines (NSAIDs) can trigger the condition. So, you may be told to avoid iodized salt and certain NSAIDs. ## When should I call my healthcare provider? If your symptoms worsen or you develop new symptoms, call your healthcare provider. ## Key points about dermatitis herpetiformis - Dermatitis herpetiformis (DH) is an intensely itchy skin disease. It causes clusters of small blisters and small bumps. - DH is caused by a sensitivity to gluten. - The symptoms of DH may clear when all gluten is cut from the diet.

ML Classification

ML Categories

/Health		99.9%
/Health/Health_Conditions		98.1%
/Health/Health_Conditions/Skin_Conditions		97.5%

Raw JSON

{
    "/Health": 999,
    "/Health/Health_Conditions": 981,
    "/Health/Health_Conditions/Skin_Conditions": 975
}

ML Page Types

/Article		67.8%
/Article/Definitions		37.8%

Raw JSON

{
    "/Article": 678,
    "/Article/Definitions": 378
}

ML Intent Types

Informational		98.3%
Commercial		29.9%
Transactional		14.6%

Raw JSON

{
    "Informational": 983,
    "Commercial": 299,
    "Transactional": 146
}

Content Metadata

Language

Author

null

Publish Time

2019-11-19 00:00:00 (6 years ago)

Original Publish Time

2019-04-04 13:36:58 (7 years ago)

Republished

Yes

Word Count (Total)

926

Word Count (Content)

632

Links

External Links

Internal Links

Technical SEO

Meta Nofollow

Meta Noarchive

JS Rendered

Yes

Redirect Target

null

Performance

Download Time (ms)

TTFB (ms)

Download Size (bytes)

9,439

Shard

116 (laksa)

Root Hash

4754538707639265316

Unparsed URL

org,hopkinsmedicine!www,/health/conditions-and-diseases/dermatitis-herpetiformis s443