Female nipple indentation is a symptom of nipple invagination, which is mostly caused by congenital nipple dysplasia. It is caused by the development of the ligaments, tendons and ducts around the breasts during development, resulting in dysplasia and shortening of the nipples. Nipple invagination is a common form of breast dysplasia, which can be corrected during adolescence through nipple lift or negative pressure attraction. The actual fact is that you will need to stick with it for a long time and try to go to the hospital for treatment under the guidance of a doctor. If the effect of manipulation is not obvious, surgery is an option. Due to prolonged nipple invagination, the secretions in the ducts of the breast cannot be discharged, which can easily cause plasmacytoid mastitis. Inverted nipples are a cause of congenital dysplasia and require prompt medical treatment. There are also some people who have nipple invagination that may be pathological and need to be examined at a hospital in time to determine the appropriate treatment plan.