Nipple plastic surgery can shape the perfect nipple, but many people are curious about the reason why the nipple becomes bigger. Let's let Shuguang's experts give you a detailed introduction. Not only women's nipples are big, but also men's nipples are enlarged, but most of the reasons for male nipples are patient factors. Male mammary hyperplasia is called male mammary dysplasia. It is common in adolescence and old age, and its pathological manifestations are glandular duct hyperplasia and no acinar hyperplasia. The general causes of nipple enlargement can be divided into two categories: primary and secondary. The primary patients are usually adolescent boys and elderly men, which are mainly caused by the temporary increase of endogenous estrogen or the decrease of androgen, and often subside spontaneously. Secondary patients are common in liver diseases, testicular diseases, adrenal diseases, thyroid diseases, diabetes, urogenital system or nervous system tumors, prostate diseases, or long-term use of certain drugs for other diseases, such as reserpine, remifentanil, digitalis and chlorpromazine. , can also cause breast development, generally can subside after stopping the drug. There are many reasons why female nipples are big. Generally, there are climax breast swelling, endocrine breast swelling or pregnant breast swelling in husband and wife's life. Through the above introduction, everyone should also understand.