• Seventy-seven adolescent psychiatric inpatients, whose index hospitalization was at a mean age of 16, were followed up for eight to ten years after discharge. The important findings at follow-up were as follows. Twelve patients had bipolar affective disorder and were severely disabled (of these, 11 had a longterm clinical course and three committed suicide). Sixteen patients had unipolar depression: five had one depressive episode and were well throughout the follow-up period, one patient had many episodes with complete remissions, and the remaining ten patients had only partial remissions and their impairment of functioning corresponded to the severity of their symptoms. One of the ten committed suicide. Eighteen (23%) patients were psychiatrically well and functioned adequately throughout the follow-up period. Five had primary depressions, five had undiagnosed psychiatric illness, and eight were diagnosed as not having a psychiatric disorder.