Absent or irregular menstrual periods (Amenorrhea)
Headaches
Low libido
Milky nipple discharge from one or both nipples
New hair growth on the chest or chin
Nipple discharge may occur occasionally or almost constantly
A benign (not cancerous) pituitary tumor
Being pregnant
Certain medications, including, sedatives, antidepressants, antipsychotics, and high blood pressure drugs
Chronic kidney disease
Cocaine and other drugs abuse
Excessive breast stimulation during sexual activity
Frequent (daily) breast self-exams
Herbal supplements
Nerve damage to the chest wall from chest injuries or chest surgery
Psychological stress
Spinal cord surgery, injury or tumors
Tight clothing
Use of birth control pills
Breast Surgeon
Endocrinologist
Gynecologist and Obstetrician