What should you know about celiac rash on feet?

Dermatitis herpetiformis is the skin eruption associated with coeliac disease. It is typically very itchy and may cause clusters of tiny bumps or blisters, with scratching leaving crusts or sores. Feet and ankles can be affected, but a rash limited to one foot may instead reflect a fungal infection, friction, footwear irritation, eczema, or psoriasis. Compare features with [Ringworm](/conditions/ringworm/) and [Contact Dermatitis](/conditions/contact-dermatitis/).

The clinician will consider the distribution, scale, blisters, nail changes, and any bowel symptoms or unexplained tiredness. Coeliac evaluation commonly uses blood testing and sometimes further assessment. Keeping gluten in the diet until testing advice is given may matter.

Book an appointment if itching continues, the rash recurs, or walking becomes uncomfortable. Take clear photographs before applying creams, note whether both feet are involved, and list recent shoes, socks, detergents, and medicines. Wash gently, dry between the toes, wear breathable footwear, and apply a plain moisturiser to dry skin but not between damp toes. Avoid steroid or antifungal treatment on a persistent unexplained eruption unless advised.

Get urgent help if the rash comes with breathing difficulty, facial swelling, faintness, or widespread rapidly developing welts. Seek prompt care for a hot painful foot, pus, red streaks, fever, fast-spreading redness, or inability to bear weight.

Ask whether the appearance suggests dermatitis herpetiformis or another foot condition, whether coeliac testing should be arranged, and what treatment is safe before the diagnosis is clear. Ask how to protect cracked skin from infection.