<unk>  is usually a benign disorder in young women due to hormonal imbalance during their menstrual cycle. During a menstrual cycle the breasts swell and become lumpy and tender. During a period, the breasts reabsorb the extra fluid inside instead of discharging it, causing breast pain.  A breast exam and a breast ultrasound should be performed to make sure nothing is hidden.
Mastalgia
Myalgia
Chest pain
Chest pain  
Myxedema
Arthralgia
Vasospasm
Lymphedema