Psychotic symptoms in mood disorders: Evaluation of 159 inpatients

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Abstract
The authors investigated the historical and clinical variables of 159 inpatients affected by mood disorders in order to identify variables which might differentiate psychotic from non-psychotic forms. The results showed that 32% of the patients had psychotic symptoms. Although no significant difference was detected with regard to the severity of depression, psychotic depressives were younger and had a lower age at onset, as well as a shorter episode length. These features suggest that depression may express itself with or without psychotic symptoms, according to the different individual and, perhaps, biological substrate. Taken together, our findings seem to indicate that psychotic depression should not be considered a separate clinical entity, but a subtype of mood disorders.