B oth doctors and patients often assume that people with terminal illnesses are apt to become clinically depressed, especially as death approaches. Rarely, however, has this assumption been studied systematically or prospectively. Our data allow us to shed some light on whether clinical depression is an inevitable or even likely concomitant of fatal illness.While several large studies have generated prevalence rates of mood disorders among HIV-positive and HIVnegative men and women on a cross-sectional basis, there is a paucity of information about longitudinal changes in rates of either syndromal disorders or psychiatric symptoms as HIV illness progresses. Joseph et al. (1) found stable scores over six semiannual occasions on self-rating scales of depression in the Chicago Multicenter AIDS Cohort Study group, despite HIV illness progression. Perry et al. (2) followed 328 homosexual and heterosexual men and women, both HIV negative and HIV positive, who sought HIV antibody testing. Over a 1-year period, they found a decline in severity of depressive symptoms on both clinician-and self-rated scales, but no difference between HIV-positive and HIV-negative subjects on any occasion.A pair of studies (3, 4), published in the Journal of the American Medical Association, followed community cohorts of homosexual men semiannually since 1985. Both used the same self-report screening scale for mood problems (Center for Epidemiologic Studies Depression [CES-D] Scale). Neither study found a significant relation between CES-D Scale scores and the time to either diagnosis of AIDS or death, although they differed regarding the effect of depressive symptoms on the rate of decline of CD4 cells.