Neuroendocrine dysfunction in schizophreniform disorder: correlation with six-month clinical outcome.

The thyrotropin-releasing hormone (TRH) stimulation test and the dexamethasone suppression test (DST) were administered to 21 patients with schizophreniform disorder at the time of admission for acute illness: 9 showed dysregulation on one or the other test. Seventeen patients followed for 6 months were divided into two groups: those with persistent dysfunction and/or psychotic symptoms and those in full remission. Only 1 of 7 patients (14%) with persistent dysfunction in contrast to 7 of 10 patients (70%) in full remission revealed dysregulation on either test. Neuroendocrine challenges may be useful in the early assessment of first-break psychotic patients, and neuroendocrine dysregulation may be a predictor of episodic illness with a better prognosis.