<prompt> Pemphigus vulgaris is caused by:BacterisVirusAutoimmuneFungal  <response>: Ans: c AutoimmuneHarrison 19th ed. 370 PEMPHIGUS Pemphigus is an autoimmune blistering disorder It results from the loss of integrity of normal intercellular attachments with the epidermis. Commonly affects indiciduals of age between 40-60. Equal prevalence among males and females. There are five variants of pephigus: Pemphigus Vulgaris: most common type Pemphigus Foliaceous: superficial pemphigus Pemphigus Vegetans: least common type Pemphigus Erythematous Fogo Selvagem: an endemic form of pemphigus foliacious. Refer to above table 