The milk swelling to a certain extent is to return to the milk, generally do not appear hard lumps, so as to avoid a long time without treatment, pus caused by lactation mastitis. It will be more trouble. Convulsions may cause overflowing nipples, affecting the child’s digestive discomfort, and in serious cases, it is likely to destroy the milk ducts septic, which in turn causes difficulties in breastfeeding, etc. So the need to deal with is generally based on physical therapy, such as looking for a professional. Just open it when opening the milk. Generally through two or three times. You can empty the accumulated milk, after wearing loose underwear, especially to keep the nipples clean and dry, the milk ducts are open and controlled.