<prompt> Pemphigus vulgaris is caused due to which type of hypersensitivity reaction?IIIIIIIV  <response>: Ans. is b i.e., lllRef: IADVL textbook of dermatology 3de p. 10991Pemphigus is a type 2 hypersensitivity reaction antibody mediated, with formation of antibodies to pemphigus antigen present rn intercellular substance. 