Cerebrospinal fluid thyrotropin-releasing hormone concentrations in patients with anxiety disorders.

: In a study of 45 patients with anxiety disorders and 11 control subjects, mean cerebrospinal fluid (CSF) concentrations of thyrotropin-releasing hormone (TRH) were not significantly different between nonpsychiatric control subjects and those with panic disorder, generalized anxiety disorder, or obsessive-compulsive disorder. Male subjects, regardless of diagnosis, had significantly higher mean CSF concentrations of TRH than females.