<prompt> Kogojs pustules are seen in?Lichen planusPemphigus vulgarisMycosis fungoidesPsoriasis vulgaris  <response>: Ans. isdi.e., Psoriasis vulgarisOn histopathological examination of psoriasis lesion there is accumulation of polymorphs in stratum malpighi layer. These clusters are known as Kogoj pustules. 