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Galactorrhea

Galactorrhea or galactorrhoea is the spontaneous flow of milk from the breast, unassociated with childbirth or nursing. It can be due to local causes or dysregulation of certain hormones. more...

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Lactation requires the presence of estrogen, progesterone and prolactin, and the evaluation of galactorrhea includes eliciting a history for various medications (methyldopa, opiates, some atypical antipsychotics) and for behavioral causes (including licorice, stress, and breast and chest wall stimulation), as well as evaluation for pregnancy, pituitary adenomas (with overproduction of prolactin or compression of the pituitary stalk), and hypothyroidism. Overproduction of prolactin leads to cessation of menstrual periods and infertility, which may be a diagnostic clue.

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Galactorrhea: what you should know about it
From American Family Physician, 8/1/04

What is galactorrhea?

Sometimes a woman's breasts make milk even though she is not pregnant or breastfeeding. This condition is called galactorrhea (say: guh-lack-tuh-ree-ah). The milk may come from one or both breasts. It may leak on its own or only when the breasts are touched. Men can have galactorrhea, too, but it is more common in women. What causes galactorrhea? Galactorrhea has many causes, although sometimes a cause cannot be found. Here are some possible causes:

* Some medicines, like hormones, birth control pills, antidepressants, and blood pressure medicine

* Herbal medicines, such as nettle, fennel, blessed thistle, anise, and fenugreek seed

* Street drugs, like marijuana and opiates

* Hormone imbalances

* Clothes that irritate the breasts, like scratchy shirts or bras that don't fit well

* Too frequent breast self-exams (daily exams)

* Stimulating the breasts during sex

* Tumors of the pituitary (say: pih-too-ih-terry) gland in the brain. These tumors are rare. They usually are not serious.

* In newborn babies, hormones from the mother are passed on to the baby during birth.

* Thyroid disease

* Kidney failure

What signs should I tell my doctor about?

Tell your doctor if you have any of these signs with your galactorrhea:

* Irregular menstrual periods

* Red (bloody) fluid leaking from your breasts

* Headaches

* Trouble sleeping

* Less interest in sex or trouble having sex

* Problems with your eyesight

* Increase in hair growth on your chin or chest

* Acne

* Increased thirst or urination

Which tests might my doctor want?

Tests are not always needed to find out what is causing your galactorrhea. But your doctor might want to take a blood sample to find out your hormone levels and to see if you are pregnant. Your doctor also might want you to have an MRI scan of your head to see if you have a tumor.

How is galactorrhea treated?

Sometimes galactorrhea will go away by itself. If you have galactorrhea and no other problems, you may not have to be treated. If galactorrhea is a side effect of a medicine you are taking, your doctor might change medicines or give you a different dosage.

Most tumors that cause galactorrhea are not cancer. They usually can be treated with medicine. Most people do not need to have surgery for a tumor.

This information provides a general overview and may not apply to everyone. Talk to your family doctor to find out if this information applies to you and to get more information on this subject. Copyright[c] 2004 American Academy of Family Physicians. Permission is granted to reproduce this material for nonprofit educational uses. Written permission is required for all other uses, including electronic uses.

This handout is provided to you by your family doctor and the American Academy of Family Physicians. Other health-related information is available from the AAFP on the World Wide Web (http://www.familydoctor.org). August 2004

COPYRIGHT 2004 American Academy of Family Physicians
COPYRIGHT 2004 Gale Group

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