What causes galactorrhea?
Galactorrhea has many causes, some of which include the following:
- Tumors (usually benign, or not cancerous), especially tumors of the pituitary (say: "pit-too-it-terry") gland, which is located in the brain
- Medicines such as hormones, antidepressants, blood pressure medicines and certain tranquilizers
- Herbal supplements such as nettle, fennel, blessed thistle, anise and fenugreek seed
- Drugs such as marijuana and opiates
- Clothing that irritates the breasts (such as scratchy wool shirts or bras that don't fit well)
- Doing very frequent breast self-exams (daily exams)
- Stimulation of the breast during sexual activity
- Kidney disease
- Oral contraceptives
- An underactive thyroid (also called hypothyroidism), which is a gland that produces hormones
Sometimes the cause of galactorrhea can't be found.
Written by familydoctor.org editorial staff