The actual fact is that the actual mastitis is actually a very good thing, and it’s not really a good thing that it’s not a good thing. 1. Inflammation stimulation: Mastitis itself is caused by inflammation, such as inflammatory cells are not eliminated in time, repeated stimulation of the mammary glands, easy to cause local redness, swelling and pain, and hard lump formation. 2. Milk stagnation: usually occurring during breastfeeding, in the acute attack may cause milk stagnation, not timely emptying of the breast, the accumulation of milk to form lumps, when the lumps gradually increase in size, repeated stimulation of the skin tissues, will cause local redness of the skin, and there may be a septic reaction. Symptoms such as localized redness in mastitis need to be evaluated by ultrasound to understand the severity of the condition. Normally, attention should be paid to nipple hygiene, keep the local dry, reduce secondary infection. If you have any questions during this period, it is recommended that you consult a medical professional in a timely manner.