Background: Bipolar disorder (BD) is a recurrent mental illness that affects more than 1% of
the world's population, it typically manifests in young adulthood. Interpersonal and Social
Rhythm Therapy is one of the interventions that has been created to carry out the bipolar illness
treatment plan (IPSRT). The goal of this intervention is to better manage patients' stressful life
events, lessen disruptions to their social and circadian cycles, and enhance medication
compliance. The study aimed to evaluate the efficacy of interpersonal and social rhythm
therapy on sleep and psychological adjustment among patients with bipolar disorders. The
setting of the study: The study was done at the psychiatric inpatient ward at the Psychiatric and
Addiction Treatment Hospital in Mit-Khalf,Menoufia, Egypt. Subjects: A purposive sample of
50 bipolar disorder patients. Research Design: The study's aim was accomplished using a quasiexperimental design. Data collection: Three tools were used; Tool (1): Structured sociodemographic and medical characteristics questionnaire for an interview Tool (II): The Arabic
version of the psychological adjustment questionnaire and Tools (III): Sleep Disorders scale.
Results: According to the study's findings, most of the patients were between the ages of 31 and
40, and more than half (76%) of them were male. When compared to before applying
interpersonal and social rhythm therapy, there was a highly statistically significant improvement
in sleep disorder, overall psychological adjustment, and its subdomains. Conclusion: It was
concluded that applying interpersonal and social rhythm therapy proved to be effective in
improving sleep and psychological adjustment among patients with bipolar disorders.