”(1) Pain in the breast area due to causes other than the breast: it is actually pain in the breast area due to diseases in other areas, such as pneumonia and costochondritis. (2) Cyclical breast pain: It is related to the menstrual cycle and is a reflection of the cyclical changes of hormones in the body. This pain is largely normal and occurs mainly in premenopausal women, especially before the age of 35, and most of it can resolve on its own. (3) Non-cyclic breast pain: Compared with cyclic breast pain, non-cyclic breast pain is more noteworthy. However, the majority of non-cyclic breast pain is also of benign origin. Its characteristics include intermittent occurrence, variable pain level, mostly unilateral occurrence, and more acute nature. Pain is not a common symptom of breast cancer, but women with high risk factors for developing the disease should seek medical attention for any breast discomfort.