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A very itchy skin rash made up of bumps and blisters.

Dermatitis herpetiformis is an off-and-on itchy skin rash made up of small blisters and bumps.

Gluten intolerance can cause this blistery skin disease. Genetics and conditions in which the immune system attacks healthy cells, called autoimmune conditions, may play a role.

The rash usually appears on the elbows, knees, torso, scalp or buttocks. The face and groin also can be involved. A burning sensation may be felt before the rash appears.

Antibiotics and a gluten-free diet are treatments.