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Journal Article

Citation

Malhi G, Bell E, Das P, Outhred T. Evid. Based Ment. Health 2019; 22(3): 95-99.

Affiliation

Department of Psychological Medicine, The University of Sydney Northern Clinical School, St Leonards, New South Wales, Australia.

Copyright

(Copyright © 2019, BMJ Publishing Group)

DOI

10.1136/ebmental-2019-300100

PMID

31248975

Abstract

BACKGROUND: Suicide is common in the context of depression and bipolar disorders, but there remains a lack of understanding as to how suicide ideation, a common symptom of mood disorders, progresses to suicidal behaviour. Irritability, a feature of some types of depression, is thought to contribute to the development of suicidal behaviour, but these associations are not well established.

OBJECTIVE: To examine the relationship between irritability and suicide ideation according to the subtype of depression expressed in patients with mood disorder.

METHODS: 75 patients with mood disorders seen at the CADE (Clinical Assessment Diagnostic Evaluation) Clinic underwent clinical assessment for suicidal ideation (Paykel Suicide Scale), symptom severity (Young Mania Rating Scale (YMRS), Hamilton Rating Scale for Depression (HAM-D) (anxious depression), Montgomery-Åsberg Depression Rating Scale (MADRS) (melancholic depression)) and irritability (item 5 of the YMRS).

FINDINGS: Interestingly, irritability correlated with mania (r=0.734, p<0.001 (YMRS)) and depressive symptom scores (r=0.369, p<0.001 (MADRS); r=0.477, p<0.001 (HAM-D)), which in turn correlated with suicide ideation scores (r=0.364, p<0.01 (MADRS); r=0.275, p=0.017 (HAM-D)). However, despite this indirect association, there was no direct correlation between irritability and suicide ideation (r=0.050, p>0.05).

CONCLUSIONS: The nature of the relationship between irritability and suicidal ideation is determined by the emotional context within which irritability operates. CLINICAL IMPLICATIONS: Findings suggest that rather than examining irritability alone, consideration of the subtype of depression, especially that of anxious depression, should be paramount in assessing suicide risk.

© Author(s) (or their employer(s)) 2019. No commercial re-use. See rights and permissions. Published by BMJ.


Language: en

Keywords

anxiety; bipolar depression; bipolar disorder; depression; irritability; major depressive disorder; melancholia; suicide

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