Dexamethasone suppression test (DST) and thyrotropin releasing hormone (TRH) stimulation test were performed in 34 patients with endogenous depression. Compared with 33 psychiatric controls (limit of discrimination for serum cortisol of 275 nmol/l = 10 micrograms/100 ml) the specificity of the DST was 91% and the sensitivity was 65%. Compared with 24 healthy subjects the sensitivity of the TRH test was 24%, and the combined sensitivity for the DST and the TRH test was 76%. In contrast to the TRH test the DST showed a significant relationship (r = 0.54, P less than 0.01) to the Hamilton Rating Score. Repeating the tests after clinical recovery parallel changes of the two tests were found in 14 of 19 patients with abnormal DST in the depressed phase. In the remaining five patients the DST normalized, while the TRH test remained unchanged. It is suggested that both the apparent higher diagnostic sensitivity and the higher rate of normalization after clinical recovery of the DST is due to the dependency of the severity of depression.

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Conscription has been employed for more than a century. To evaluate the course and fate of conscripts deemed mentally unfit for immediate continued service, a prospective questionnaire study of conscripts referred for mental evaluation was conducted. Questionnaires were completed at the time of enrollment, time of admittance for evaluation, time of discharge from their evaluation and at 1-year follow-up. Out of a class of 6949 conscripts, 93 were referred for psychiatric evaluation and 69 of those referred decided to enter the study (60 of these were in time deemed unfit for further military service). At the time of admittance, on average after 79 days of service, there was a significant 36%, 34%, 20% and 20% increase in depression, sleep, somatization and interpersonality scores, respectively. At the time of discharge 14 days after admittance, the symptom scores had dropped to a level comparable to scores at the time of enrollment. At 1-year follow-up, the descending trend in scores was maintained, though not reaching statistical significance compared with scores at time of discharge. The scores at 1-year follow-up were also, except for a higher depression score, comparable with the scores of a control group of conscripts evaluated 1 year after service. The psychological profile of conscripts referred for evaluation was different at the time of enrollment compared with conscripts in general, the scores being between 9% (interpersonality) and 29% (depression) higher. They also had a higher prevalence of adverse family events in their history. The course observed is indifferent from other situations of enforced stress.