<prompt> Acantholysis is seen in: March 2012PsoriasisPemphigus vulgarisLichen planusPityriasis versicolor  <response>: Ans: B i.e. Pemphigus vulgaris Dermatologic conditions and features Psoariasis 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 antibodies Lichen planus is characterized by 5Ps; Pruritic, polygonal, purple violaceous, plane flat topped, papules with Wickhams striae on surface Pityriasis versicolor features include perifollicular, hypopigmented or hyperpigmented, macules surmounted with branny scales 