Melatonin secretion was inversely correlated with the depressed mood and reality disturbance factors of the Hamilton Depression Scale and these results are consistent with previous reports of low melatonin syndrome in a subgroup of depressed patients.
ABSTRACT: The authors measured serum samples of melatonin at 11:00 p.m. in 28 patients suffering from major depression. Melatonin secretion was inversely correlated with the depressed mood and reality disturbance factors of the Hamilton Depression Scale. These results are consistent with previous reports of low melatonin syndrome in a subgroup of depressed patients.