title: A nonhealing ulcer on the face.
authors.affiliation: State University of New York at Stony Brook, USA.
authors.forename: D K
authors.initials: DK
authors.lastname: Sun
authors.forename: D M
authors.initials: DM
authors.lastname: Siegel
mesh_terms: D000368:Aged; D003872:Dermatitis / Q000175:diagnosis / Q000209:etiology*; D005162:Factitious Disorders / Q000150:complications* / Q000175:diagnosis / Q000523:psychology; D006801:Humans; D008297:Male; D009668:Nose Diseases / Q000175:diagnosis / Q000209:etiology*; D014456:Ulcer / Q000175:diagnosis / Q000209:etiology*