What is the cause of nipple itch?

There are many factors that cause nipple itching. First, if the recent temperature is high, and the patient's clothing is too tight, it will cause sweat to evaporate and block the hair follicles at the nipple, thus causing the symptoms. Secondly, if you don't pay attention to the hygiene of the nipple, you will be invaded by bacteria, causing mastitis and other diseases, which will also cause the phenomenon.