Photodynamic Therapy, a successful treatment for granular parakeratosis

Abstract

Granular parakeratosis is characterized by variably hyperkeratotic brownish papules or plaques, mostly found on flexures. Different treatments have been suggested with variable results. We present a series of 3 cases successfully treated with one session of methyl-aminolevulinate photodynamic therapy, showing resolution of the lesions and symptoms within less than 2 weeks, as a potentially new, safe and effective therapeutic option.

Keywords: Granular parakeratosis; Methyl-aminolevulinate, MAL; Photodynamic therapy.