Armpit fossa to chest pain bouts are a disease caused by breast enlargement. Mastocytosis includes the mammary glands as well as the parametrium, so that the pain goes from the armpit to the mammary glands every time. Mammary gland hyperplasia is a benign disease, mostly seen in young women, and is related to estrogen levels. When estrogen levels rise before menstruation, the mammary glands can have pinch-like pain, and when estrogen levels drop to normal after menstruation, mammary gland pain can usually be relieved on its own. There is also normal breast tissue in the parametrium, so mastopexy-like pain can occur in the parametrium, and the pain can occur every time the menstrual period comes, and the treatment is mainly with Chinese medicine, such as Breast Disease Spirit or Easy Pill.