Mastodynia, mastalgia or mammalgia are names for a medical symptom that means breast pain (from the Greek masto-, breast and algos, 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.
Read more about Mastodynia: Types, Causes, Treatments For Cyclical Breast Pain, Treatments For Non-cyclical Breast Pain, Breast Cancer Risk