title: Subungual blood is not always a reassuring sign.
authors.forename: C Ralph
authors.initials: CR
authors.lastname: Daniel
authors.forename: Nathaniel J
authors.initials: NJ
authors.lastname: Jellinek
mesh_terms: D003937:Diagnosis, Differential; D006406:Hematoma / Q000175:diagnosis*; D006801:Humans; D009260:Nail Diseases / Q000175:diagnosis*; D009262:Nails; D011934:Reagent Strips; D012878:Skin Neoplasms / Q000175:diagnosis*
chemical_list: D011934:Reagent Strips