Breasts without lumps and soft to the touch but with pain are commonly associated with local injury due to external impact, improper massage, improper clothing wear, or swelling of the breasts due to hormonal changes in the body, such as during menstruation and pregnancy. However, pathological pain cannot be ruled out, and the more common cases are mastitis. Patients are advised to go to the hospital in time to avoid continuous aggravation of the condition. Common causes and treatments 1, external stimulation: when accidentally fallen or chest accidentally hit, or when the chest massage is stronger, improper technique, will lead to damage to the soft tissues of the chest, can appear the situation of breast pain. When the size of the underwear is small and tight, or when the top worn is tighter, the pressure on the chest is greater, and when the chest is suddenly relaxed after taking off the underwear, it can lead to pain and discomfort in the chest. Patients can apply local hot compresses to relieve the pain and discomfort, and choose the right size and looser clothing to reduce the pressure on the chest. Gently massage can also relieve chest pain, but avoid excessive force to avoid aggravating the discomfort; 2, hormonal factors: menstruation and pregnancy due to changes in the body’s estrogen, will stimulate the chest, resulting in breast pain. And mastitis occurs in breastfeeding women. When the nipple is broken, it can easily lead to the invasion of bacteria along the lymphatic vessels, which can lead to infection, and the patient will feel pain in the breast, with local redness, swelling and fever. If the breast pain is due to menstruation or pregnancy, it can mostly be relieved after the end of menstruation and pregnancy. Usually no medication or other treatment is needed, and it can mostly be relieved after proper rest; 3. Disease causes: If caused by mastitis and the patient is breastfeeding, if the pain is severe, the patient is advised to suck out the milk and avoid breastfeeding again. If not in breastfeeding, you can use drugs such as metronidazole and penicillin for treatment. Precautions If the patient is experiencing discomfort, it is recommended to go to a hospital breast specialist for a timely examination to rule out breast disease. If it is caused by other diseases, it can also be detected and treated early.