Suicide ideation and attempts in obsessive-compulsive disorder

Area of Science:

• Psychiatry
• Genetics
• Clinical Psychology

Background:

• Obsessive-compulsive disorder (OCD) is associated with increased risk of suicidality.
• Understanding the specific features linked to suicidality in OCD is crucial for effective intervention.
• Existing research shows inconsistencies in identifying these associated features.

Purpose of the Study:

• To investigate predictors of lifetime suicidal ideation and attempts in adults with OCD.
• To examine the roles of psychiatric comorbidity, illness severity, OCD symptom dimensions, childhood trauma, and BDNF gene polymorphism in suicidality.
• To clarify the complex relationship between OCD and suicidal behaviors.

Main Methods:

• A regression analysis was employed to analyze data from 496 adult participants with OCD.
• Key variables assessed included psychiatric comorbidities (e.g., Major Depressive Disorder, Borderline Personality Disorder, Avoidant Personality Disorder), OCD symptom severity, childhood trauma, and the BDNF Val66Met polymorphism.
• Lifetime suicidal ideation and suicide attempts were the primary outcome measures.

Main Results:

• Over half of participants (51.8%) reported suicidal ideation, and 16.5% reported at least one suicide attempt.
• Female sex (OR=2.75) and Borderline Personality Disorder (BPD) (OR=7.35) were significant risk factors for suicide attempts.
• Major Depressive Disorder (MDD) (OR=2.4), BPD (OR=2.8), and Avoidant Personality Disorder (AVPD) (OR=1.96) significantly predicted suicidal ideation. The BDNF Val66Met polymorphism showed no significant association with suicidality.

Conclusions:

• Suicidality is a prevalent issue among individuals diagnosed with OCD.
• Factors such as female gender, depression, and specific personality disorders are significantly associated with increased suicide risk.
• Further research is needed to elucidate underlying mechanisms, and clinical focus should be on assessing and managing modifiable risk factors for improved patient outcomes.