Pain in the mammary gland (mastalgia) is a unilateral or bilateral pain in the chest in women. The symptom is accompanied by heaviness and swelling of the mammary gland, discharge from the nipple. Mastalgia is caused by hormonal changes, inflammatory and infectious diseases, benign and malignant neoplasms of the breast. To verify the cause of pain, ultrasound, radiography, invasive methods, and laboratory tests are used. To eliminate the pain syndrome, analgesics, hormonal drugs, physiotherapy are used.