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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
A 30-year-old male had severely itchy papulo–vesicular lesions on extremities, knees, elbows and buttocks for one year. Immunofluorescence staining of the lesions showed IgA deposition at dermo-epidermal junction. The most probable diagnosis is –
assistant
The correct answer is  Itchy papulovesicular lesions on extensor surfaces and deposition of IgA at DEJ suggests the diagnosis of dermatitis herpatiformis, which is associated with Coeliac disease