U.S. doctors online nowAsk doctors free
Orlando, FL
A 38-year-old female asked:

High prolactin level since 2000. mri's does not show tumor in pit gland. no period in a year. breast discharges milky color. mammogram was normal. ?

2 doctor answers6 doctors weighed in
Dr. Morton Levitt
A Verified Doctoranswered
Pathology, Anatomic and Clinical 50 years experience
High Prolactin: Aside from a pituitary tumor, high prolactin levels can be caused by breast feeding, hypothyroidism and certain medications. Any medication that restricts the effect of the brain chemical Dopamine can cause abnormalities in prolactin production. This is because Dopamine regulates prolactin production by the pituitary gland. These medications include some drugs for high blood pressure.
Dr. Ira Katz
A Verified Doctor commented
A US doctor answered Learn more
I agree with the above, hypothyroidism is the #1 thing to look at. The list of meds that elevate prolactin is actually very long and every med you take should be checked. There could also be a tumor (benign) that is too small to even be seen on MRI - usually easily controlled. Lastly there is a rare, not dangerous, condition called macroprolactinemia, can be checked for by routine blood tests.
Jul 29, 2015
Dr. Ira Katz
A Verified Doctor commented
A US doctor answered Learn more
If you are not, you should be seeing an endocrinologist.
Jul 29, 2015
Dr. David Sneid
Endocrinology 42 years experience
Med or small tumor: Very small pituitary tumors may not be visible on mri, but they do tend to eventually enlarge and show up, particularly in 13 years. High prolactin can also be due to low thyroid and many medications, particularly medications for psychosis, depression, anxiety and the like. Some women just have high prolactin, without known cause. Cabergoline can be very helpful. Ask your doctor.

90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more. Get help now:

Ask doctors free
Educational text
Talk to a doctor
24/7 visits - just $39!
50% off with $15/month membership
Last updated Jul 29, 2015


Content on HealthTap (including answers) should not be used for medical advice, diagnosis, or treatment, and interactions on HealthTap do not create a doctor-patient relationship. Never disregard or delay professional medical advice in person because of anything on HealthTap. Call your doctor or 911 if you think you may have a medical emergency.