Chuna Manual Treatment for Patients With Primary Dysmenorrhea Primary Dysmenorrhea

Inclusion Criteria: * Patients whose menstrual pain is NRS 5 or higher during the last 3 months due to primary dysmenorrhea * Patients who are between 14 and 49 years of age * Patients whose cycle has been regular between 21 and 40 days for the past 3 months * Patients who agree to participate in clinical research and provide written test subject consent Exclusion Criteria: * Patients whose cause of menstrual pain is determined to be an organic problem (uterine fibroids, adenomyosis, endometriosis, etc.) rather than a primary cause. * Patients who have taken oral contraceptives or other hormonal therapy within the past 3 months. * Patients diagnosed with other chronic diseases (stroke, myocardial infarction, kidney disease, diabetic neuropathy, dementia, epilepsy, etc.) that may interfere with the treatment effect or interpretation of results. * Patients who are currently taking steroids, immunosuppressants, drugs for mental illness, or other drugs that may affect the results of the study. * Patients for whom manual therapy is inappropriate or unsafe: history of lumbar fusion or pelvic girdle surgery, spinal fracture, or severe instability. * Pregnant women, those planning to become pregnant within 6 months, and those planning to take hormones such as oral contraceptives. * Patients who finished participating in another clinical study less than 1 month ago, or who plan to participate in another clinical study during the study participation and follow-up period within 6 months from the date of selection. * Patients who find it difficult to fill out the consent form for research participation. * Other cases where participation in clinical research is deemed difficult by the researcher.