While it is becoming increasingly clear that mood disorders tend to be
chronic, intermittent and/or recurrent conditions with different mani
festations over time, little is known of the variability or course of
mood disorders that are associated with severe psychosocial stress. Th
is paper reports on the prevalence and course of major, minor, and sub
syndromal depressions in 328 widows and widowers followed prospectivel
y from 2 to 25 months following one of the most disruptive of all natu
rally occurring stressors, spousal bereavement. The results are consis
tent with the following conclusions: (1) past major depression (prior
to the death) predicts an increased risk for major depression followin
g bereavement; (2) membership in any of the unipolar subgroups, in tur
n, predicts future depression throughout the unipolar depressive spect
rum; (3) subsyndromal and minor depression stand between major depress
ion, on the one hand, and no depression, on the other, in terms of the
ir effects on overall adjustment to widowhood. Thus, the results suppo
rt the validity of subsyndromal depression, and that the three subgrou
ps (major, minor and subsyndromal depression) are pleiomorphic manifes
tations of the same unipolar depression disorder. (C) 1997 Elsevier Sc
ience B.V.