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Comorbid depressive symptoms in persistent delusional disorder: A retrospective study from India

Published online by Cambridge University Press:  23 March 2020

K. Kulkarni
Affiliation:
National institute of mental health & neurosciences, psychiatry, Bangalore, India
R. Arasappa
Affiliation:
National institute of mental health & neurosciences, psychiatry, Bangalore, India
K. Prasad
Affiliation:
National institute of mental health & neurosciences, psychiatry, Bangalore, India
A. Zutshi
Affiliation:
University of Melbourne, psychiatry, Melbourne, Australia
P. Chand
Affiliation:
National institute of mental health & neurosciences, psychiatry, Bangalore, India
P. Murthy
Affiliation:
National institute of mental health & neurosciences, psychiatry, Bangalore, India
M. Kesavan
Affiliation:
National institute of mental health & neurosciences, psychiatry, Bangalore, India

Abstract

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Background

Previous studies have reported depressive symptoms in patients with persistent delusional disorder (PDD). Patients with PDD and depression may need antidepressants for treatment.

Aim

The aim of the study was to compare the sociodemographic profile, clinical presentation and treatment response in patients with PDD with and without comorbid depressive symptoms.

Methods

We conducted a retrospective chart review of patients diagnosed with PDD (ICD-10) from 2000 to 2014 (n = 455). We divided the patients into PDD + depression (n = 187) and PDD only (n = 268) for analysis.

Results

Of the 187 patients with PDD + D, only eighteen (3.9%) were diagnosed with syndromal depression. There were no significant differences in sociodemographic profile including sex, marital and socioeconomic status (all P > 0.05). PDD + D group had a significantly younger age at onset ([PDD + D: 30.6 9.2 years vs. PDD: 33.5 11.1 years]; t = 2.9, P < 0.05). There was no significant difference between the clinical presentation including mode of onset, the main theme of their delusion and secondary delusions (all P > 0.3). However, comorbid substance dependence was significantly higher in patients with PDD only. (χ2 = 5.3, P = 0.02). In terms of treatment, response to antipsychotics was also comparable ([> 75% response: PDD + D = 77/142 vs. PDD = 106/179); χ2 = 1.9, P = 0.3). There was a significant difference between the two groups in terms of antidepressant treatment ([PDD + D = 32/187; 17% vs PDD: 17/268; 6%), χ2 = 12.9, P = 0.001).

Discussion

Patients with PDD + D had significantly earlier onset of illness. These patients may require antidepressants for treatment.

Disclosure of interest

The authors have not supplied their declaration of competing interest.

Type
e-Poster Walk: Comorbidity/Dual pathologies and guidelines/Guidance - Part 2
Copyright
Copyright © European Psychiatric Association 2017
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