Disseminated Superficial Actinic Porokeratosis: An Interesting Case Report Treated Surgically

Abstract

Disseminated superficial actinic porokeratosis (DSAP) is the most common of the porokeratoses. DSAP tends to be inherited as an autosomal dominant disorder, with the earliest reported age of onset at 7 years, and is usually fully penetrant by the third or fourth decade of life but sporadic cases are also seen. It is more frequent in females and the pathogenesis remains unknown. Lesions are characteristically uniformly small, annular, asymptomatic, or mildly pruritic papules ranging from 2 to 5 mm in diameter, distributed symmetrically on the extremities. Lesions are more generalised than other forms of porokeratosis located predominantly on the sun-exposed sites. On histological examination, cornoid lamella is characteristic. We report on a case of DSAP in a 21-year-old female who presented with multiple asymptomatic skin lesions over upper extremities, face, neck and upper back since 2 years. On histopathological examination, hyperkeratosis, parakeratosis, cornoid lamella is seen. Granular layer was thinned out below cornoid lamella and nonspecific dermal inflammatory infiltrate is seen.