Overview
Galactorrhea is the milky nipple discharge unrelated to the normal milk production of breast-feeding. It can occur in women, men, and even infants, and is often a sign of an underlying endocrine issue.
Signs to Watch For
- Persistent or intermittent milky nipple discharge
- Spontaneous or expressed discharge
- Can occur in one or both breasts
- Associated irregular periods or headaches
Causes
The most common cause is a prolactinoma (a benign pituitary tumor). Other causes include certain medications, thyroid disorders (hypothyroidism), and chronic kidney disease.
Diagnosis
Diagnosis involves checking serum prolactin and thyroid hormone levels, followed by an MRI of the pituitary gland if prolactin is elevated.
Treatment Options
Treatment targets the underlying cause to normalize hormone levels and stop the discharge.
- Dopamine agonist medications (to lower prolactin and shrink tumors)
- Treating underlying hypothyroidism
- Adjusting current medications (if they are the cause)
- Surgical referral for large, unresponsive pituitary tumors
frequently asked questions
Galactorrhea itself is usually not a sign of breast cancer, especially if the discharge is milky and comes from both breasts. However, any new breast discharge should be evaluated by a doctor.
Yes, men can experience galactorrhea, often associated with a prolactin-secreting tumor, and it may be accompanied by erectile dysfunction or a loss of sex drive.