Pain in the nipples must be paid more attention to prevent disease, depending on the age and period of nipple pain causes are different, some are due to disease, some are normal physiological phenomenon, such as puberty development will bring a slight swelling and pain to the nipples, is a physiological phenomenon, menstruation may be due to the body hormone secretion is too high, there will be nipple pain phenomenon. After pregnancy, the hormone level in the body changes and the estrogen level rises, and nipple pain can also occur. The nipple pain caused by all the above conditions is mostly a normal physiological phenomenon. If you are suffering from breast enlargement, breast cancer, acute mastitis and other diseases, nipple pain can also occur, in addition to nipple cracking caused by breastfeeding can also cause nipple pain, and some people wear too tight underwear, thus causing pain caused by squeezing and rubbing nipples. The actual pain in the nipples must be seen at the hospital in time to have a doctor check out the body and do further mammography or breast ultrasound to clarify the specific cause and give the appropriate treatment plan.