Porokeratosis is a group of disorders characterized by epidermal keratinization associated with cornoid lamella. Porokeratosis has been described as having five distinct clinical subtypes: Mibelli or plaque type, disseminated superficial actinic porokeratosis, linear porokeratosis, punctate porokeratosis, porokeratosis palmaris et plantaris disseminata. We describe a 61-year-old Korean woman presented with porokeratosis palmaris et plantaris disseminata.