Introduction: Sleep disturbances are common in psychiatric disorders like borderline personality disorder (BPD) and bipolar disorder (BD), potentially aiding in their clinical differentiation. This study aimed to compare sleep quality, quantity, and daytime sleepiness in individuals with these disorders.
Method: This causal-comparative study included 40 participants (20 from each group) diagnosed with BD or BPD, based on DSM-5 criteria, referred to Imam Hossein Hospital in Tehran in 2017. Data were collected using the Pittsburgh Sleep Quality Index (PSQI), Epworth Sleepiness Scale (ESS), Mood Disorder Questionnaire (MDQ), Borderline Personality Inventory, and self-reported sleep duration.
Results: MANOVA analysis revealed significant differences between the groups in sleep quality, quantity, and daytime sleepiness (P < 0.05). Individuals with bipolar disorder showed more unstable sleep patterns and higher daytime sleepiness than those with borderline personality disorder.
Conclusion: These findings may improve diagnostic accuracy and inform the development of targeted therapeutic interventions based on sleep patterns.
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