Heredity: Nipples are bigger than others from birth.

Effects of pregnancy and breastfeeding: The more pregnancies, the longer breastfeeding time, and the bigger nipples may become.

Excessive nipples can be reduced by surgery. The method is to peel off the skin on one side of the nipple together with the subcutaneous tissue in a whole circle like peeling bark, and keep the structures such as blood vessels, nerves and mammary ducts in the middle, and then suture the wound. This operation can usually be performed under local anesthesia or general anesthesia, and at the same time with other breast plastic surgery. The nipple feels normal after operation, which does not affect the function of breastfeeding and will not leave scars, which is quite safe. If the nipple of an adult woman is trapped under the skin surface of the areola and does not protrude out of the plane of the areola, it is called nipple inversion.

Causes of nipple depression:

1, the clothes are too tight. Especially women's underwear is too tight during breast development, which easily leads to nipple depression.

2. Improper use of bra. If the bra is too small, too tight and used too early, it will cause nipple depression.

3. Nipple depression is also related to heredity. Clinical observation shows that the incidence of nipple depression in the next generation of mothers with a history of nipple depression and their mothers' generation may be higher than that of normal people.

Correction of nipple invagination;

Hand traction: squeeze the nipple out of the skin surface by yourself, hold the nipple horizontally or vertically with your thumb and forefinger, and pull the nipple outward continuously or intermittently for about 30 minutes each time, alternating sides. Daily 3? Five times. Instrument traction: that is, through manual or electric breast pump, the nipple is sucked out by using the negative pressure principle, and the nipple can be sucked out continuously or intermittently for 30 minutes at a time, with alternating sides, 3? Five times. After two months, the above two correction methods can get good results.

Irreversible nipple inversion, that is, severe nipple inversion, can only be corrected by surgery. The operation is to completely loosen the invaginated muscle fiber bundle and fill the surrounding tissue under the nipple, so as to enhance the supporting force of the nipple and make the nipple bulge and plastic. Surgery is generally performed under local anesthesia, and there are various surgical methods, which can be selected purposefully according to specific conditions. The operation is carried out in the areola, which is small and will not leave obvious surgical scars. Under normal circumstances, it will not damage the sensory nerve of the nipple, so it will not hinder the normal feeling of the nipple after operation. Surgery generally does not destroy the mammary duct, so it will not cause breastfeeding disorders.

Preventive measures of nipple invagination

1 to prevent the nipple from being squeezed:

Preventing nipple from being squeezed can avoid aggravating nipple invagination. For example, it is appropriate to wear bra in underwear at ordinary times, not too tight. For girls with larger breasts, more attention should be paid to the looseness of breasts. For girls who have prone habits, they should be corrected in time.

2. Pay attention to personal dress:

Underwear should be made of cotton, changed frequently and disinfected in the sun. If the nipple shows signs of redness and cracking, it is best to disinfect the underwear by cooking. In addition, girls should not use bras too early, so as not to affect nipple development.