Abnormal nipple, one nipple doesn't know why it's always concave, especially

Patient's question:

Age
Doctor, hello:
I don't know when it started, but my two nipples have always been concave for some reason, especially when the temperature is high. When it's cold, the areola shrinks, and the nipples also protrude. I don't know how to make the nipples no longer change like this as they used to. Doctor, please help me.

Doctor's answer:

Based on your information, the condition you described is considered nipple inversion. The degree of nipple inversion varies from person to person. Mild cases may only (nipple retraction), where the nipple can be pushed out by hand or made to protrude from the surface through negative pressure suction. The general causes of nipple inversion include indentation of the skin and subcutaneous tissue, underdeveloped smooth muscle of the nipple, shortening of milk ducts, and fibrosis and contraction of some tissues. Among these, shortening of milk ducts and fibrosis and contraction of tissues are the main reasons for severe nipple inversion.