Mastalgia is breast pain. There are two types of mastalgia: cyclic and noncyclic. Cyclical breast pain is most often associated with menstrual periods. Noncyclical breast pain is not related to the menstrual cycle.

Mastalgia can be caused by:

  • Hormonal changes associated with the menstrual cycle
  • Pregnancy
  • Trauma to the breast
  • Mastitis
  • Thrombophlebitis
  • Stretching of breast ligaments
  • Pressure from a bra
  • Hidradenitis suppurativa
  • Certain medications, such as hormone medications, antidepressants, or certain heart medications