Premenstrual Dysphoric Disorder (PMDD) is a cyclical mood disorder characterized by emotional, cognitive, physical, and sleep-related symptoms that occur in the days leading up to menstruation and improve shortly after menstruation begins. Although medications are commonly used to treat PMDD, many individuals experience side effects, do not benefit from medication, or prefer non-medication-based approaches. Sleep difficulties are very common in individuals with PMDD and may contribute to mood symptoms, emotional regulation difficulties, and functional impairment. Psychological interventions that focus on sleep, such as sleep psychoeducation and cognitive-behavioural strategies for insomnia, are effective in other mood and anxiety disorders but have not been well studied in PMDD. This study aims to evaluate the feasibility, acceptability, and preliminary effects of a brief, sleep-focused psychoeducation workshop tailored for individuals with PMDD or severe premenstrual symptoms. Information collected in this study may help inform future research and may improve care for individuals with PMDD.
Aged 16 and above
positive screening for severe PMS and PMDD as per the Premenstrual Severity Screening Tool (PSST)
experiencing sleep difficulties captured by a score of 12 or greater on the Insomnia Severity Index (ISI)
reported regular menstrual cycle (average length of 25-35 days)
Severe cognitive disability that could impact the understanding of the clinical questionnaires
a diagnosis of schizophrenia or any other primary psychotic disorder or current alcohol or substance use disorders
presence of any unstable medical conditions
St. Joseph's Healthcare Hamilton
Lead sponsor
McMaster University
Collaborator