title: Case history.
authors.affiliation: School of Dental Hygiene, INHOLLAND University of Professional Education Louwesweg 1, 1066 EA Amsterdam, the Netherlands.
authors.forename: Ron J M
authors.initials: RJ
authors.lastname: Knevel
authors.forename: Annemieke
authors.initials: A
authors.lastname: Kuijkens
mesh_terms: D000328:Adult; D003937:Diagnosis, Differential; D005260:Female; D006560:Herpes Labialis / Q000175:diagnosis*; D006801:Humans; D008047:Lip Diseases / Q000175:diagnosis*; D019226:Oral Ulcer / Q000175:diagnosis*; D013281:Stomatitis, Aphthous / Q000175:diagnosis; D013283:Stomatitis, Herpetic / Q000175:diagnosis