<prompt> Gluten-free diet is useful in management ofDermatitis herpetiformisErythema multiformeEpidermolysis bullosa acquisitaToxic epidermal necrolysis TEN  <response>: Ans. a Dermatitis herpetiformis Ref. H - 18thch. 54DERMATITIS HERPETIFORMIS Associated with celiac sprue. Extremely pruritic small papules and vesicles. Located on elbows, knees, buttocks, and posterior neck. Subepidermal blisters with neutrophils in dermal papillae are characteristic. Granular IgA deposits in dermal papillae are common. Associated with HLA DR3, DQw2. Gluten - free diet Dapsone are treatment Steroids are not used to treat dermatitis herpetiformis.Educational points: Anti-endomysial antibodies have the best sensitivity and specificity for the diagnosis of celiac disease Celiac sprue gluten-sensitive enteropathy. In celiac sprue intolerance is found to:BarleyRyeOatsWheat 