What is the most effective pharmacological treatment for psychotic depression?
There were only 12 studies, and these included only small numbers of people. Few meta-analyses were possible because of clinical heterogeneity. There were differences between studies with regard to diagnosis, uncertainties around randomisation and allocation concealment, differences in treatment interventions (pharmacological differences between the various antidepressants and antipsychotics) and different outcome criteria.
In a European general population study, 18.5% of respondents with a major depressive episode had psychotic features; the prevalence of psychotic depression was 0.4% and of non-psychotic depression 2.0%.1 Compared with non-psychotic depression, psychotic depression is marked by greater severity, increased incapacity, a lower likelihood of placebo response, longer duration of episodes and recurrence of psychotic features in subsequent episodes. Evidence is limited regarding the most effective pharmacological treatment for psychotic depression: combination of an antidepressant plus an antipsychotic, monotherapy with an antidepressant or monotherapy with an antipsychotic.2