Breast pain, or mammalgia, is terms used when a person has pain within their breasts. Sometimes the reasons behind breast pain are breastfeeding, large breasts that are heavy, cysts, tumors, to cancer as well as in general hormones that a woman has during a monthly menstral cycle may trigger breasts to become sore and painful.
Mastodynia, mastalgia (from the Greek masto-, breast and algos, pain) or mammalgia is the medical symptom of breast pain. Pain can range from minor discomfort to severely incapacitating pain. Many women are more worried about a possible cancer risk than about the pain. Breast pain during lactation or after weaning is not included into this definition but usually classified as breast engorgement or mastitis.
Contributions by Richiez, 18.104.22.168, and Arcadian.