Acute mastitis during weaning is not usually associated with slimming injections, but it is not recommended during weaning. During the weaning period it can cause milk to accumulate and the breasts to become swollen. If not properly cared for, it may cause bacteria to invade the breast and cause infection, resulting in acute mastitis. Facial thinning injections do not cause bacterial infections in the breasts, and there is no direct correlation between acute mastitis and facial thinning injections. The injection may cause local adverse reactions such as redness, swelling, inflammation and pain of the skin on the face, and it is usually recommended that the injection be performed after the breasts have stopped producing milk. Acute mastitis will cause breast pain, elevated breast skin temperature, redness and swelling, and some patients may also develop systemic symptoms during the acute phase. If breast discomfort occurs during the weaning period, you should go to the hospital in time for examination and treatment. If you need to have a face-slimming injection, it is also recommended to go to a regular hospital for consultation, and decide whether you can have a face-slimming injection under the guidance of the doctor.