Patients with adenomyosis primarily exhibit significant dysmenorrhea as a clinical symptom, which is related to the pathological factors of the disease. The cause of adenomyosis is the ectopic placement of the endometrial tissue into the muscular layer and glands of the uterus. Due to this displacement, with each menstrual period, the changes in the body's estrogen levels affect the ectopic endometrial tissue, causing the production of substances similar to menstrual blood. This results in the enlargement of the uterine cavity and the hardening of the uterus, contributing to the pathologic types of adenomyosis and resulting in painful menstruation. It is recommended that patients with adenomyosis seek medical examination and treatment at a hospital.