Tourette syndrome is a neuropsychiatric disorder that holds the potential to afflict the emotional, familial, social, or scholastic performances of patients with Tourette syndrome in day-to-day life functioning. The disorder is today characterized mainly and diagnosed by clinical observations, yet false-negative results obtained in the diagnosis of Tourette syndrome are numerous and well documented. There is still no laboratory or imaging technique available for the diagnosis of Tourette syndrome. This article reports on changes of the ambient thermal perception (38%) and a circadian dysregulation of the body-temperature profile present in Tourette syndrome probands, irrespective of their chronologic age, sex, or comorbid symptoms. An involvement of idiopathic hypothalamic dysfunctions associated with Tourette syndrome is proposed. Such a phenomenon, if substantiated, could lead to a better understanding of Tourette syndrome and the development of unbiased physical diagnostic criteria of Tourette syndrome and potentiate possible production of novel therapeutic possibilities. (J Child Neurol 2002;17:738—744).
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