If you have a painful swollen breast with nipple pain, there are two possibilities: first, cystic hyperplasia of the breast, mostly seen in women aged 30-50, manifested as swollen and painful breasts with nodular changes of breast hyperplasia, which can cause nipple swelling and pain when the pain is obvious, you can apply local heat, and take oral breast fetish elimination particles or prolotherapy, the pain can be relieved, if the drug treatment is ineffective and the symptoms persistently worsen, you can consider surgery. The treatment. The second is acute mastitis, which occurs in lactating women, as Staphylococcus aureus infects the breast tissue through the chapped nipple, causing an acute purulent infection of the breast tissue. In the early stages of infection, when the breast is swollen and painful and the skin temperature increases, oral penicillin or cephalosporin anti-infection treatment can be given, but once the infection expands and a breast abscess is formed, surgery is often required, and the surgical procedure is incision and drainage of the breast abscess.