Bilateral Naevus Comedonicus

Abstract

Observations: Nevus comedonicus is a rare adnexal hamartoma of the pilosebaceous units. Here, a-20-year old man with bilateral nevus comedonicus of neck is presented. His nevus comedonicus, comprising of a linear group of hyperpigmented comedone like papules is seen on both sides of his neck. There was no associated pain, itching or discharge. He presented mainly for cosmetic reason. Skin biopsy of the lesion showed the presence of widely dilated invagination resembling dilated hair follicle filled with orthokeratotic horny materials penetrating the reticular dermis. The interfollicular epidermis was normal.