The area where the arm is attached to the chest is the location of the paronychia in the body. If there is pain in this area, it means that the pain is caused by the parametrium. The tissue inside the parametrium contains the same glandular tissue of the breast as the normal breast tissue of the human body. Therefore, if there is periodic pain in the breast, that is, mastopexy, there will also be periodic pain inside the parametrium, which is related to the estrogen level in the human body, and it usually occurs in the pre-menstrual period, when the estrogen level in the body is significantly higher. However, there are usually no nipples on the surface of the parametrium, and sometimes there may be nipples, called multiple nipple syndrome. For the management of the parametrium, you can take oral medications for breast enlargement, such as prozac and breast disease. If the pain is particularly pronounced and the parametrium is very large affecting the aesthetics, the parametrium can be removed.