<prompt> Acantholysis is seen in:March 2012PsoriasisPemphigus vulgarisLichen planusPityriasis versicolor  <response>: Ans: B i.e. Pemphigus vulgarisDermatologic conditions and featuresPsoariasis is a chronic dermatosis characterized by presence at typical sites of well defined erythematous papules and plaques, which are surmounted with large, silvery loose scales.Pemphigus is an intraepidermal bullous disorder, which is characterized clinically by presence of cutaneous and mucosal blisters and histologically by acantholysis due to deposition of intercellular antibodiesLichen planus is characterized by 5Ps; Pruritic, polygonal, purple violaceous, plane flat topped, papules with Wickhams striae on surfacePityriasis versicolor features include perifollicular, hypopigmented or hyperpigmented, macules surmounted with branny scales 