What is mastalgia and mastodynia? are they related?

Both are breast pain: If u have breast pain you need an exam by your gyn or breast doctor as there can be many causes of breast pain, usually benign but sometimes not and you will need a mammogram if you haven't had one, a common cause is fibrocystic changes, and if it is that vit e every day can prevent the pain or cause much less pain, sometimes after a proper workup u may need anti-inflammatories or other meds.