What should you know about celiac skin rash photos?

Dermatitis herpetiformis, the skin eruption linked with coeliac disease, can appear as clusters of small bumps or blisters that become scratched and crusted. Images vary with skin tone, lighting, stage of healing, and camera focus. Eczema, contact allergy, psoriasis, scabies, medicine rashes, and fungal infections may look alike in a photograph. See [Scabies](/conditions/scabies/) and [Drug Rash](/conditions/drug-eruption/) for other patterns.

A clinician needs the story as well as the image: where the rash began, how itchy it is, whether it is symmetrical, and whether digestive or general symptoms are present. Testing may involve blood work and a skin sample. Ask before changing your diet.

Take a clear image in natural light with a wider view and a close view, keeping the date and body site with the record. Do not use filters or apply several new creams before documenting a flare. Arrange an appointment for a persistent or recurrent eruption, and bring the images even if the skin looks calmer that day. Gentle washing, fragrance-free moisturiser, cool compresses, and short nails can reduce irritation while you wait.

Seek emergency help for breathing difficulty, swelling of the lips or tongue, faintness, or a rapidly spreading allergic-looking eruption. Prompt care is needed for fever, severe pain, pus, extensive blistering, skin peeling, or rash affecting the eyes or mouth.

Ask whether the photographed pattern could fit dermatitis herpetiformis, whether a biopsy or coeliac blood tests are appropriate, and whether you should continue gluten until testing is complete. Ask which treatment is safe for the current stage of the rash.