title: Exercise-induced hyperthermia in childhood: a case report and pilot study.
abstract: Hyperthermia is characterized by an increase of body core temperature due to exogenous heat exposure and/or endogenous heat production. Contrary to fever the hypothalamic-controlled temperature set point remains unchanged.
  
  
  OBJECTIVE
  To demonstrate that exercise-induced hyperthermia is a common phenomenon in childhood.
  
  
  METHODS
  We describe a 5-year-old boy, who attended our outpatient clinic with a 6-month observation period of exercise-induced hyperthermia with rectal temperatures up to 39.0 degrees C. Characteristically temperature dropped to normal values after cessation of exercise.
  
  
  METHODS
  In eight children aged 5-8, tympanic and rectal temperatures were measured before and after exercise.
  
  
  RESULTS
  The rectal temperature increases frequently after exercise (p < 0.001), whereas tympanic temperature did not (p = 0.2).
  
  
  CONCLUSIONS
  Benign hyperthermia should be considered in children with increased body temperature of unknown sources. The site of temperature measurement might be critical in the identification of this condition.
authors.affiliation: Department of Pediatric Pulmonology and Immunology, Charité, Humboldt University, Berlin, Germany. tilmann.kallinich@charite.de
authors.forename: Tilmann
authors.initials: T
authors.lastname: Kallinich
authors.forename: R
authors.initials: R
authors.lastname: Keitzer
authors.forename: E
authors.initials: E
authors.lastname: Puskas
authors.forename: F
authors.initials: F
authors.lastname: Boldt
mesh_terms: D001831:Body Temperature / Q000502:physiology*; D002648:Child; D002675:Child, Preschool; D004423:Ear / Q000502:physiology; D015444:Exercise / Q000502:physiology*; D005080:Exercise Test; D005334:Fever / Q000209:etiology*; D006339:Heart Rate; D006801:Humans; D008297:Male; D010865:Pilot Projects; D012007:Rectum / Q000502:physiology; D013177:Sports