Most premenopausal women will experience some degree of physiologic diffuse cyclic mastalgia. Nipple Discharge Nipple discharge is a common breast symptom during a woman's reproductive years. Pathologic nipple discharge is spontaneous and most often presents from a single duct opening on the nipple. A benign intraductal papilloma is the most common etiology. Galactography can identify intraluminal lesions and Mastitis Breast pain, fever, and clinical signs of infection indicate mastitis.
Most cases occur during pregnancy or lactation.
S aureus is the most common cause.