title: The dexamethasone suppression test: identification of subtypes of depression.
abstract: In this study mean 4 p.m. cortisol levels were significantly higher in patients with major depression than in control subjects or in patients with bipolar depression or dysthymic-related disorders. Moreover, the distribution of values differed significantly among groups. Eighteen of 45 patients with major depression had cortisol levels of 10 micrograms/dl or more, compared with 2 of 20 bipolar depressed patients and 0 of 31 controls. Patients with very high cortisol levels (15 micrograms/dl or more) tended to fulfill criteria for major depression with mood-congruent psychosis. The distribution of values in the major depression group also suggested the existence of three major subgroups. The authors discuss the implications of these data.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001714:Bipolar Disorder / Q000097:blood / Q000175:diagnosis; D003866:Depressive Disorder / Q000097:blood / Q000175:diagnosis*; D003907:Dexamethasone; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D006854:Hydrocortisone / Q000097:blood*; D008297:Male; D008875:Middle Aged
chemical_list: D003907:Dexamethasone; D006854:Hydrocortisone