The Prevalence and Association of Depression and Anxiety With Multiple Sclerosis in Riyadh, Saudi Arabia: A Cross-Sectional Study.

Introduction Multiple sclerosis (MS) is often associated with depression and anxiety, with no clear prevalence, and the relationship between them is not fully understood. Methods In a cross-sectional study of 365 multiple sclerosis patients selected through a random sampling method from the MS society of Riyadh, Saudi Arabia, we collected data by self-administered questionnaires - the Patient Health Questionnaire (PHQ-9) and the Generalized Anxiety Disorder (GAD-7) questionnaire - and analyzed by descriptive and analytical statistics. Results Approximately 51.