title: Keeping an eye on Crohn's disease: orbital myositis as the presenting symptom.
abstract: Episodic periorbital swelling due to presumed orbital inflammation and myositis caused intermittent apparent proptosis and was the presenting symptom of ileocecal Crohn's disease (CD) in a teenage female with a family history of autoimmune disorders and CD. Orbital myositis, a very rare extraintestinal manifestation of inflammatory bowel disease (IBD), likely represents a process of impaired immunoregulation related to the underlying intestinal inflammation. This rare manifestation of IBD simulates the more commonly encountered thyroid orbitopathy (ophthalmopathy), but IBD should be considered if all thyroid tests are negative. It is important to recognize that orbital myositis may be an extraintestinal manifestation of Crohn's disease so that the diagnosis can be made and appropriate therapy commenced.
authors.affiliation: Division of Gastroenterology and Nutrition, Hospital for Sick Children, University of Toronto, Ontario.
authors.forename: C A
authors.initials: CA
authors.lastname: Durno
authors.forename: R
authors.initials: R
authors.lastname: Ehrlich
authors.forename: R
authors.initials: R
authors.lastname: Taylor
authors.forename: J R
authors.initials: JR
authors.lastname: Buncic
authors.forename: P
authors.initials: P
authors.lastname: Hughes
authors.forename: A M
authors.initials: AM
authors.lastname: Griffiths
mesh_terms: D001327:Autoimmune Diseases / Q000150:complications / Q000175:diagnosis; D002648:Child; D003424:Crohn Disease / Q000150:complications* / Q000175:diagnosis; D005260:Female; D006801:Humans; D009220:Myositis / Q000150:complications* / Q000175:diagnosis; D009916:Orbital Diseases / Q000150:complications* / Q000175:diagnosis