INVERSE FOLLICULAR KERATOSIS – CASE REPORT IN A YOUNG FEMALE PATIENT

Abstract

Inverted follicular keratosis is a rare benign disease named and first described by Helwig in 1954, whose origin is still controversial. It is usually characterized by a firm papule, located mainly on the face in male patients in a 2:1 ratio, over 40 years of age. Its diagnosis is mainly made through the histology of the excised lesion, as it is easily confused with other skin lesions such as basal cell carcinomas, viral warts, and seborrheic keratoses. Its main treatment is complete excision of the lesion, and recurrences are rare. We present a case of inverted follicular keratosis, with an atypical location and uncommon age range. The case presented drew attention due to the difficulty in clinical diagnosis of the disease, in addition to the recurrent evolution of the lesion even after excision.