IgA deposits in dermal papilla are characteristically seen in?
(A) A. Dermatitits herpetiformis (B) B. Pemphigus vulgaris (C) C. Bullous pemphigoid (D) D. IgA dermatosis of childhood
(A) A. Dermatitits herpetiformisDermatitits herpetiformis is diagnosed by a blood test for IgA antibodies, and by a skin biopsy in which the pattern of IgA deposits in the dermal papillae, revealed by direct immunofluorescence, distinguishes it from linear IgA bullous dermatosis and other forms of dermatitis.