Frequent touching of the nipple may lead to infection, hardening of the local skin and enlargement of the nipple. The nipple is very sensitive, and at the same time there is the opening of the milk ducts, there are a lot of bacteria on the hands, often touching the nipple may lead to bacterial infection of the skin at the nipple inflammation, easy to induce nipple inflammation, and may lead to local skin hardening, redness and swelling and itching adverse reactions. Frequent touching of the nipple will cause the nipple to be in a state of excitement for a long time, and it is easy to become congested, which may lead to nipple enlargement and darkening of the areola, affecting the aesthetic appearance of the breasts. If you touch it too hard, it may lead to breast damage. Avoid nipple friction and keep your nipples clean. If your breasts are uncomfortable and cannot be relieved for a long time, it is recommended that you consult a doctor in time to avoid delaying your condition.