If milk blockage fever is properly treated, the fever will usually subside 3-5 days after treatment and the local swelling and painful sensation will gradually disappear. Milk clogging is a common problem for breastfeeding women. The cause is related to the blockage of milk ducts, which leads to the failure to empty the milk in the gland in time, resulting in the formation of local lumps, called stagnant milk. Mastitis is less likely to appear. If inflammation has already occurred, it is important to observe whether the local inflammation has formed a deep abscess, and if there is no abscess, the breast with fever and lumps can still be fed to the baby. If you are worried that the baby has diarrhea, you should also actively empty the milk so as to reduce the chance of aggravating the infection. If an abscess has formed, on top of a clear diagnosis by ultrasound, the abscess should be cut open in a timely manner so that the infection can be controlled faster and symptoms such as pain and fever will disappear naturally.