Male nipple pain and mass are related to breast growth, breast tumor and intercostal neuritis. The pain at the nipple is accompanied by lumps, which should be combined with the patient's age, puberty, and young and middle-aged men's local pain. It is considered to be caused by breast development, which belongs to a physiological process. Young and old men's breast is developed on one side or both sides due to hormone imbalance or increased estrogen level in the body, and local breast tissue is enlarged, and there will be pain when hard lumps are touched, Only 1% of men have chest tumors. If there are local lumps and pain, they should also go to the hospital for examination. Because the tumor continues to grow, pressing local nerves will cause pain in breast lumps. As the intercostal nerve will be inflamed due to coldness and trauma, when pressing, not only local pain will appear, but also the pain will be transmitted to the nerve endings along the pain points, and pain or nodular lumps will also appear in the chest.
