What is the reason for the female nipple retraction?

Female nipple invagination may be caused by a variety of reasons, such as congenital factors, acquired factors, genetic factors, etc. 1. Congenital factors Congenital factors are one of the more common causes. In the process of embryonic development, mammary duct shortening, partial tissue fibrosis contracture, papillary smooth muscle dysplasia, etc., may cause congenital nipple invagination. This condition usually occurs from childhood, and bilateral nipples may also exist invagination phenomenon.2 acquired factors such as adolescence wearing too tight bra, long-term compression may lead to nipple invagination. There are some breast diseases, such as mastitis or breast tumor invasion of breast ducts, ligaments, etc., can make nipples pulled and invagination. Trauma may also damage structures such as mammary ducts, resulting in nipple invagination. 3. Genetic factors If there is nipple invagination in the family, there may be genetic susceptibility to make individuals more prone to nipple invagination. Nipple invagination may not only affect appearance, but also affect lactation and other functions. If nipple invagination is found, seek medical attention in time, conduct detailed examination and evaluation to clarify the cause, and select appropriate treatment methods according to the specific situation, such as manual traction, negative pressure suction or surgical correction.