To the Editor: The article by Steven R. Pliszka, M.D., et al.
+(1) raised a number of questions concerning mood disorders—in particular, mania—among juvenile offenders. It is of interest that the rate of major depressive disorder identified in this population was quite similar to those found in two previous studies
+(2,
+3). Although both of these studies characterized the presence of depression, only the former characterized all identifiable affective disorders. With the use of different structured interviews, the authors identified major depressive disorder in 23% of the juvenile delinquents in each study; minor depressive disorder was verified in 15% of the juvenile delinquents in the former study
+(2). The number of delinquents with affective disorders in these studies was similar to that found by Dr. Pliszka et al.: 38% versus 42%, respectively. The similarity in the frequency of depressive disorder and the correlation of depressive disorder with substance abuse in these studies are quite striking.