Neuroendocrine effects of haloperidol in an adolescent with Gilles de la Tourette's disease and delayed onset of puberty.

The effects of haloperidol on the release of prolactin, growth hormone, and luteinizing hormone during sleep were studied in an adolescent male who had Gilles de la Tourette's disease and delayed onset of puberty. At doses of 5 and 2 mg, haloperidol led to an increase of prolactin secretion and a suppression of luteinizing hormone release. Growth hormone was unaffected. Despite these changes, the patient had normal secondary sexual development consistent with puberty.