Dermatitis herpetiformis
Dermatitis herpetiformis is a chronic inflammatory disease that produces lesions that burn and itch intensely. This is a close-up of dermatitis herpetiformis lesions. The lesions are red (erythematous) and may be slightly raised (papular), form small pus-filled areas (pustules), or there may be blisters (vesicles). The disease develops suddenly and may last from weeks to months. It may occur in association with gluten (wheat) sensitivity and allergy.
Also known as: Duhring's disease
Definition
Dermatitis herpetiformis is an extremely itchy rash made of bumps and blisters. The rash is chronic, which means it continues over a long period of time.
Causes, incidence, and risk factors
Dermatitis herpetiformis usually begins in people age 20 and older, although children may sometimes be affected. It is seen in both men and women.
The cause is unknown. However, dermatitis herpetiformis is frequently linked to gluten sensitivity (celiac sprue disease) in the small bowel.
Symptoms
Dermatitis herpetiformis is usually extremely itchy. The bumps or blisters usually appear on the elbows, knees, back, and buttocks. In most cases, the rash is the same size and shape on both sides. Symptoms of dermatitis herpetiformis tend to come and go.
Signs and tests
A skin biopsy and direct immunofluorescence test of the skin are performed in most cases. Your doctor may also recommend a biopsy of the intestines.
Treatment
Dapsone, an antibiotic, may help most patients.
A strict gluten-free diet will also be recommended to help control the disease. Sticking to this diet may remove the need for medications and prevent later complications.
Expectations (prognosis)
The disease may be well controlled with treatment. Without treatment, there may be a significant risk of intestinal cancer.
Complications
Thyroid disease may be found in many patients with dermatitis herpetiformis. Patients are also more likely to develop certain cancers of the intestines.
Calling your health care provider
Call your health care provider if you have a rash that continues despite home treatment.
Prevention
There is no known prevention of this disease. People with this condition may be able to prevent complications by avoiding foods that contain gluten.
References
Habif TP. Clinical Dermatology. 4th ed. St. Louis, Mo: Mosby; 2004.
McPherson RA, Pincus MR. Henry's Clinical Diagnosis and Management by Laboratory Methods. 21st ed. St. Louis, Mo: WB Saunders; 2006.
- Review date:
- April 15, 2009
- Reviewed by:
- Jonathan Kantor, MD, North Florida Dermatology Associates, Jacksonville, FL. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.
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