Nevus anemicus.
D000109:Acetylcholine / Q000008:administration & dosage; D000293:Adolescent; D000794:Angiokeratoma / Q000175:diagnosis* / Q000473:pathology; D001369:Axons; D001808:Blood Vessels / Q000473:pathology; D004106:Dilatation; D005260:Female; D006632:Histamine / Q000008:administration & dosage; D006651:Histocytochemistry; D006801:Humans; D009130:Muscle, Smooth / Q000473:pathology; D010862:Pilocarpine / Q000008:administration & dosage; D012701:Serotonin / Q000008:administration & dosage; D012867:Skin / Q000098:blood supply; D012878:Skin Neoplasms / Q000175:diagnosis* / Q000473:pathology; D013194:Staining and Labeling
D010862:Pilocarpine; D012701:Serotonin; D006632:Histamine; D000109:Acetylcholine