A tingling sensation when your baby is suckling is mostly caused by mastitis. Especially for new mothers, the incidence of acute mastitis is very high. Mastitis is also easily induced by postpartum weakness, decreased immunity, more sweating, and squeezing and bumping of the breast during breastfeeding. If breast swelling and pain persist without relief, become more and more serious, or if hard lumps appear, you need to go to the hospital for examination in time. Excessive milk and poor milk discharge can also accumulate into lumps and cause breast swelling and pain. A tingling sensation when your baby sucks milk is mostly caused by mastitis. Especially for first-time mothers, the incidence of acute mastitis is very high. 1, period of redness and swelling, the main manifestation is a part of the breast swelling pain, there is pressure pain, the skin of the breast can be slightly red. 2, period abscess formation period, the lump gradually increased hard, pain is obvious, can appear high fever, surrounding skin large bright red, at this time the abscess has formed. 3, period of abscess ulceration late, abscesses mature when part can be broken by themselves, or surgical incision and drainage, the body temperature is normal need to change medication regularly until the wound healing. So breast pain during breastfeeding, must be treated as soon as possible to avoid causing unnecessary pain, pay attention to underwear do not wear too tight, the use of antibiotics during treatment temporarily do not breastfeeding. Keep your breasts clean to prevent milk accumulation. Before each baby eats milk, you need to wipe your nipples clean with water before letting your baby eat milk.