This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Autoimmune Skin Disorders, Subject name: Skin
[{'content': 'Gluten-free diet is useful in management of \nSelect and explain. \nA. Dermatitis herpetiformis, B. Erythema multiforme, C. Epidermolysis bullosa acquisita, D. Toxic epidermal necrolysis (TEN)', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. a (Dermatitis herpetiformis) (Ref. H - 18th/ch. 54)DERMATITIS 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', 'role': 'assistant'}]