Mastitis is an inflammation of the mammary gland caused, generally, by infection. One cause may be lack of hygiene. But often occurs when a woman is breastfeeding, the skin of the nipples may crack and let the bacteria living on the skin penetrate the fatty tissue of the breast. The proliferation of bacteria produces an abscess it difficult exit milk ducts in the breast. The usual symptoms of breast inflammation include sore breasts, bloating, having a tender area and reddened, swollen glands in the armpits, fever, chills, fatigue, etc. To eliminate the infection, they are often prescribed antibiotics and analgesics for pain relief. Other recommendations are the local application of heat using wet cloths, extreme hygiene, removal of breast milk, getting enough rest and drink plenty of liquids. In any case, you can continue to breastfeed.