Why do breasts hurt for no reason?

Breast pain, or mastalgia, can occur for various reasons, including hormonal fluctuations related to the menstrual cycle, pregnancy, or menopause. Other factors like stress, certain medications, or physical activity can also contribute to discomfort. Sometimes, breast pain can be idiopathic, meaning there is no identifiable cause. If the pain persists or is severe, it's advisable to consult a healthcare professional for evaluation.