title: Three cases of 'morsicatio labiorum'.
abstract: Morsicatio labiorum is a form of tissue alteration caused by self-induced injury, mostly occurring on the lips, and is considered to be a rarely encountered mucocutaneous disorder. Clinically, it is a macerated grey-white patch and plaque of the mucosa caused by external stimuli (self-induced injury) such as habitual biting, chewing, or sucking of the lip. It is often confused with other dermatological disorders involving the oral mucosa, which can lead to a misdiagnosis. We herein report three cases of morsicatio labiorum; two cases were misdiagnosed as exfoliative cheilitis at the time of the first visit.
authors.affiliation: Department of Dermatology, Hanyang University College of Medicine, Seoul, Korea.
authors.forename: Ho Song
authors.initials: HS
authors.lastname: Kang
authors.forename: Ha Eun
authors.initials: HE
authors.lastname: Lee
authors.forename: Young Suck
authors.initials: YS
authors.lastname: Ro
authors.forename: Chang Woo
authors.initials: CW
authors.lastname: Lee