title: Hazardous party trick (infolding of the pinna).
abstract: Two cases of habitual pinna folding are reported. One case was complicated by the development of bilateral haematoma auris as a direct result of the trauma caused by the folding.
authors.affiliation: ENT Department, Charing Cross Hospital, London.
authors.forename: S A
authors.initials: SA
authors.lastname: Hickey
authors.forename: P M
authors.initials: PM
authors.lastname: Clarke
mesh_terms: D002648:Child; D004424:Ear Canal; D004425:Ear Cartilage; D004426:Ear Deformities, Acquired / Q000150:complications*; D004427:Ear Diseases / Q000209:etiology; D006406:Hematoma / Q000209:etiology; D006801:Humans; D008297:Male