If the nipple is painful when touched by hand, it is considered to be inflammation of the nipple. The mammary glands are secretory organs, and secretions are discharged from the milk ducts, which open at the nipple. When the nipple is clogged or inverted, the discharge of secretion is blocked, which may lead to nipple inflammation once bacteria invade the nipple. Nipple pain, redness, swelling, serious local abscess can be formed, the need for timely puncture drainage, if necessary, to do breast duct irrigation treatment, usually pay attention to do a good job of nipple cleanliness and hygiene. In addition, cystic hyperplasia of the breast will appear breast swelling and stinging pain, and at the same time can be radiated to the nipple, nipple pain and discomfort. It is regular, accompanied by the menstrual cycle, you can take oral lactic acid symptomatic treatment. Nipple pain can also be caused by trauma such as nipple compression or impact. Try to go to a regular hospital and let the doctor check and then treat the symptoms.