Papular acantholytic dermatosis: a rare cause of genital rash

Abstract

A 52-year-old female presented to our hospital’s STD unit with multiple asymptomatic skin coloured papules along both inguinal folds. The patient noted the onset of these lesions approximately two months before her presentation A punch biopsy was performed, which revealed hyperkeratosis and hypergranulosis in the epidermis along with acantholytic and dyskeratotic foci, leading to the diagnosis of papular acantholytic dermatosis (PAD). Our patient showed a remarkable response after topical corticosteroid use followed by topical calcineurin inhibitor use.