Phakomatosis pigmentokeratotica (PPK) is a very rare epidermal nevus disorder characterized by the association of speckled lentiginous nevi with epidermal sebaceous nevi, and extracutaneous anomalies.
Synonyms:
related_synonym:
Phacomatosis pigmentokeratotica; organoid nevus with sebaceous differentiation, a speckled-lentiginous nevus, and other associated anomalies