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 –
Itchy papulovesicular lesions on extensor surfaces and deposition of IgA at DEJ suggests the diagnosis of dermatitis herpatiformis, which is associated with Coeliac disease
Pemphigus vulgaris
Bullous pemphigoid
Dermatitis herpetiforms
Nummular eczema