title: Perniosis: a case of painful progressive rash over the distal extremities.
authors: Department of Emergency Medicine, Boston Medical Center, Boston, Massachusetts 02118, USA.
authors: Mazen J
authors: MJ
authors: El Sayed
mesh_terms: D002647:Chilblains / Q000150:complications / Q000175:diagnosis*; D018450:Disease Progression; D005533:Foot Dermatoses / Q000150:complications / Q000175:diagnosis*; D006229:Hand Dermatoses / Q000150:complications / Q000175:diagnosis*; D006801:Humans; D008297:Male; D008875:Middle Aged; D010146:Pain / Q000209:etiology