Dermatitis Herpetiformis: Causes, Symptoms, and Treatment
Medically reviewed by Sumiran Racherla, MD, Internal Medicine. Last reviewed: October 23, 2026.
What kind of doctor treats Dermatitis Herpetiformis?
A dermatologist, a doctor who treats skin conditions, usually leads care for dermatitis herpetiformis. A gastroenterologist, a doctor who treats the digestive system, may also help because the rash is linked to celiac disease. A direct primary care or concierge doctor can be a first stop for an evaluation and can refer you to a specialist when needed.
What is dermatitis herpetiformis?
Dermatitis herpetiformis (DH) is a very itchy rash made of bumps and blisters. The rash is chronic, which means it lasts a long time.
Despite its name, DH is not related to the herpes virus. It is an autoimmune disorder, which means the body's defense system attacks its own healthy tissue.
DH is a skin form of celiac disease. Celiac disease is a condition where eating gluten causes swelling in the small intestine. People with DH are sensitive to gluten, and it causes the skin rash.
DH is rare. It is found mainly in adults, but children can sometimes have it.
Symptoms
The main symptom is a rash that itches a lot. Signs can include:
- Extremely itchy bumps or blisters, most often on the elbows, knees, back, and buttocks.
- A rash that is usually the same size and shape on both sides of the body.
- Scratch marks and raw patches of skin (erosions) instead of blisters in some people.
- A rash that can look like eczema, a common itchy skin problem.
The scalp can be affected too. The face and groin are less often involved. Tooth enamel defects can also occur.
Most people with DH have damage to the intestines from eating gluten. But only some have gut symptoms. These can include bloating, cramping, belly pain, diarrhea, or constipation.
DH can also lead to other health problems. These include autoimmune thyroid disease and certain cancers, especially lymphomas of the intestines.
Causes and who gets it
The exact cause is unknown. Experts think both genes and the environment play a part. Gluten is the main trigger from the environment.
The rash forms when an antibody called IgA collects in the skin. This sets off more immune reactions that cause the blisters and bumps.
Certain genes, called HLA-DQ2 and HLA-DQ8, are closely linked to DH. Close family members of a person with DH also have a higher chance of getting DH or celiac disease.
DH is seen most often in people of northern European heritage. Men may be slightly more likely to get it than women.
How doctors diagnose it
Doctors usually take a small skin sample, called a biopsy, near the rash. A special test called direct immunofluorescence looks for IgA antibody deposits in the skin. These deposits are not normally found in skin.
Blood tests can support the diagnosis. Sometimes a doctor also suggests a biopsy of the intestines, but this is usually not needed.
Other itchy, blistering conditions can look similar. Examples are linear IgA disease, pemphigoid, eczema, and scabies.
Treatment
Treatment has two parts: a medicine and a strict gluten-free diet.
Dapsone is an antibiotic that works very well for DH. Itching can improve in as little as several hours after the first dose. Dapsone can cause side effects, so you need regular checkups and lab tests.
A strict gluten-free diet helps both the rash and the gut problems. It can take several months to notice the benefit. A dietitian, a food and nutrition expert, can help you find hidden gluten and plan what to eat.
In some people, sticking to the diet may remove the need for medicine. Many others still need some dapsone to prevent flares, which are usually linked to eating gluten by accident.
If you cannot take dapsone, doctors may use another medicine. The most common choice is sulfapyridine. Steroid creams can ease itching for a short time, but they are not enough for long-term treatment.
The disease may be well controlled with treatment. Without treatment, there may be a significant risk of intestinal cancer.
When to see a doctor
See a doctor if you have a very itchy rash with bumps or blisters, especially on the elbows, knees, back, or buttocks. Contact your provider if you have a rash that continues despite treatment.
Tell your doctor about belly bloating, pain, diarrhea, or constipation, because DH is linked to celiac disease. If you take dapsone, keep your follow-up visits and lab tests.
How a direct primary care or concierge doctor fits in
A direct primary care doctor charges a flat monthly fee instead of billing insurance, while a concierge doctor usually charges more and often works alongside insurance. Either can look at a new rash, order first tests, and refer you to a dermatologist. They can also help coordinate care with other professionals, such as a dietitian, and keep track of follow-up visits.
Common questions
Is dermatitis herpetiformis caused by the herpes virus?
No. Despite its name, DH is not related to the herpes virus. It is an autoimmune disorder linked to gluten.
Is dermatitis herpetiformis the same as celiac disease?
Not exactly, but they are closely linked. DH is a skin form of celiac disease, so the two overlap. Most people with DH have intestinal damage from gluten, but only some have gut symptoms.
Does a gluten-free diet help dermatitis herpetiformis?
Yes. A strict gluten-free diet is effective for both the rash and the gut problems. It may take several months to notice the benefit, and a dietitian can help you plan it.
Does dermatitis herpetiformis go away on its own?
No. DH is a chronic condition, which means it lasts a long time. The disease may be well controlled with treatment.
Sources
- MedlinePlus - Dermatitis herpetiformis
- National Organization for Rare Disorders - Dermatitis Herpetiformis
- National Institute of Diabetes and Digestive and Kidney Diseases - Dermatitis Herpetiformis: Skin Manifestation of Celiac Disease
Medical Disclaimer
This content is for general educational and informational purposes only and is not medical advice. It is not a substitute for professional medical advice, diagnosis, or treatment, and reading it does not create a doctor-patient relationship. Always seek the advice of your physician or another qualified health provider with any questions about a medical condition, and never disregard or delay seeking professional advice because of something you read here. If you think you may have a medical emergency, call 911 (or your local emergency number) immediately.
