Primary non-endogenous depression and features attributed to reactive depression.

Primary non-endogenous depression was examined with respect to preceding life stress and instability of personality. A sample of 146 hospitalized patients suffering from primary endogenous depression, primary non-endogenous depression or depression secondary to a neurosis was interviewed for preceding personal loss and completed the Eysenck Personality Inventory after recovery. Presence of a preceding personal loss did not discriminate between the three types of depression. Only in personality patterns did primary non-endogenous depressives show features that have been attributed to reactive depression. The primary non-endogenous depressives were significantly more introverted and neurotic than the endogenous depressives, but had lower neuroticism scores than patients with depression secondary to neuroses. Two-thirds of all depressives were found to dissimulate on the Lie scale. Depressives secondary to neuroses showed significantly lower Lie scores than primary endogenous and non-endogenous depressives. High Lie scores were interpreted as expressions of denial or conformity.