Dermatitis Herpetiformis: The Celiac Skin Rash Explained (Symptoms, Treatment, Diet)
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Itchy, blistering skin rash that won't go away? It could be dermatitis herpetiformis β the skin form of celiac disease. Learn symptoms, diagnosis, and treatment.
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What Is Dermatitis Herpetiformis?
Dermatitis herpetiformis (DH) is a chronic, intensely itchy skin rash that's actually a manifestation of celiac disease. Despite the name, it has nothing to do with herpes β it's called "herpetiformis" because the blisters can resemble herpes lesions.
About 15-25% of celiac patients develop DH, and it's sometimes the only symptom of celiac disease. Many people with DH have minimal or no digestive symptoms.
What Does DH Look Like?
Appearance
Common Locations
What It Feels Like
DH itch is described as one of the most intense itches of any skin condition. Patients often say:
How DH Is Diagnosed
Skin Biopsy (Gold Standard)
A dermatologist takes a punch biopsy from uninvolved skin next to a lesion. The biopsy is tested for IgA deposits using direct immunofluorescence. Granular IgA deposits in the dermal papillae confirm DH.
Important: The biopsy must be taken from healthy-looking skin next to a lesion, not from the lesion itself.
Celiac Blood Tests
Genetic Testing
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Treatment
1. Gluten-Free Diet (Primary Treatment)
A strict gluten-free diet is the long-term treatment for DH:
2. Dapsone (Immediate Relief)
3. Other Medications
DH vs. Other Skin Conditions
DH is commonly misdiagnosed as:
Living with DH
Managing Flares
Long-Term Outlook
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About the Author
Sarah Mitchell
Lead Content Writer & Nutritionist, B.S. Nutrition Science
Sarah was diagnosed with celiac disease in 2018 and writes evidence-based guides combining clinical nutrition knowledge with 6+ years of personal gluten-free living experience. All health content is medically reviewed by our advisory team.
Meet our full team βMedical Disclaimer: This article is for informational purposes only and is not a substitute for professional medical advice. Always consult your physician or a registered dietitian before making dietary changes related to celiac disease or gluten sensitivity. Read full disclaimer.
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