Psychotic Features in Major Depressive Disorder
Summary
Psychotic features in major depressive disorder describe the presence of delusions or hallucinations alongside core depressive symptoms such as low mood, anhedonia and cognitive impairment. This subtype, often termed psychotic depression, affects up to 20 per cent of individuals diagnosed with severe unipolar depression and is associated with greater clinical severity, higher rates of hospital admission and an elevated risk of suicide and all-cause mortality. The co-occurrence of psychotic symptoms complicates diagnosis, as mood-congruent delusions (for example, pervasive guilt or nihilistic beliefs) and auditory hallucinations may be misattributed to primary psychotic disorders. Pathophysiological models implicate dysregulation of monoaminergic and glutamatergic systems, neuroendocrine abnormalities and inflammatory processes. Early recognition is critical: treatment typically combines antidepressant and antipsychotic medication or electroconvulsive therapy, with maintenance strategies designed to prevent relapse. Recent efforts have focused on identifying biomarkers and clinical predictors to stratify risk, refine diagnostic criteria and personalise therapeutic approaches. The global burden of psychotic depression underscores the need for improved screening, integrated care pathways and research into mechanistic underpinnings to reduce morbidity and mortality.
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Psychotic Features in Major Depressive Disorder publication trend
The graph below shows the total number of articles in psychotic features in major depressive disorder across all publications each year (not limited to Nature Index journals).
Technical terms
Psychotic depression: A form of major depressive disorder characterised by the presence of delusions or hallucinations in addition to core depressive symptoms.
Delusion: A firmly held false belief that is not in keeping with cultural norms and is impervious to contrary evidence.
Hallucination: A sensory perception experienced in the absence of an external stimulus, commonly auditory in psychotic depression.
First-episode drug-naïve: Individuals encountering their initial clinical episode of a disorder who have not received prior pharmacological treatment.
Maintenance therapy: Ongoing treatment administered after acute symptom remission to prevent relapse or recurrence of illness.
References
- Prevalence and risk factors for psychotic symptoms in young, first-episode and drug-naïve patients with major depressive disorder. BMC Psychiatry (2024).
- Antipsychotics in the maintenance phase for psychotic depression. Acta Psychiatrica Scandinavica (2023).
- Mortality in psychotic depression: 18-year follow-up study. The British Journal of Psychiatry (2022).
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