title: Perniosis: a histopathological review.
mesh_terms: D002647:Chilblains / Q000473:pathology*; D003937:Diagnosis, Differential; D005260:Female; D005627:Frostbite / Q000473:pathology*; D006229:Hand Dermatoses / Q000473:pathology; D006801:Humans; D007868:Leg Dermatoses / Q000473:pathology; D008297:Male; D012867:Skin / Q000473:pathology