This bachelor's thesis examines the impact of physiotherapy on pain, physical activity, and quality of life in women with dysmenorrhea. The thesis is divided into a theoretical and a practical part. The general theoretical section covers the anatomy of the pelvic floor and internal reproductive organs, pelvic floor diagnostics, the physiology of the menstrual cycle, the pathophysiology and risk factors of dysmenorrhea, pain in primary dysmenorrhea, and functional disorders of the musculoskeletal system associated with primary dysmenorrhea. The special theoretical section explores the impact of dysmenorrhea on women's quality of life and physical activity, as well as the role of physiotherapy in the treatment of primary dysmenorrhea. The practical part of this thesis presents a case study of a patient diagnosed with primary dysmenorrhea. It includes the initial and final examinations, individual therapeutic sessions, and a comprehensive evaluation of the treatment outcomes. The thesis also features illustrations of exercises designed for pelvic floor muscle relaxation, which can be utilized by women suffering from dysmenorrhea.