title: Hyperthyroidism in anorexia nervosa: case report and review of the literature.
abstract: OBJECTIVE
  To report hyperthyroidism as a cause of unexpected weight gain during the course of anorexia nervosa (AN).
  
  
  METHODS
  A case report and review of the literature.
  
  
  RESULTS
  A 42-year-old woman with a 27-year history of AN had involuntary weight gain when she became hyperthyroid, but lost weight after treatment of the hyperthyroidism. An increase in appetite has been reported when hyperthyroidism occurs during AN.
  
  
  CONCLUSIONS
  Clinicians should include hyperthyroidism in the differential diagnosis of unexpected weight gain in AN.
authors.affiliation: Eating Disorders Program, University of British Columbia, Vancouver, British Columbia. clbirm@interchange.ubc.ca
authors.forename: Carl Laird
authors.initials: CL
authors.lastname: Birmingham
authors.forename: Susan
authors.initials: S
authors.lastname: Gritzner
authors.forename: Emilio
authors.initials: E
authors.lastname: Gutierrez
mesh_terms: D000328:Adult; D000856:Anorexia Nervosa / Q000150:complications*; D005260:Female; D006801:Humans; D006980:Hyperthyroidism / Q000150:complications*; D012720:Severity of Illness Index