Mastalgia (mas-TAL-juh) is the medical name for breast pain and may affect up to 70% of women in their lifetime. It is
normal for women to have 2-3 days of mild breast pain just before their menstrual period. For others the pain can last more
than 5 days. It can be so bad it is not comfortable to wear a T-shirt or to be hugged.
Sometimes the pain may not be related
to the menstrual period at all. Breast pain may be in both breasts, only one breast, or only in one part of a breast. It may go
to other areas such as the armpit or the arm.
There are 3 main types of breast pain:
Cyclical
This kind of pain is worse closer to the menstrual period. The amount of pain can change from
month to month.
Non-cyclical
The pain does not change with the menstrual period. It may be there all the time or it may come
and go without a pattern.
Chest Wall Pain
This is not true breast pain but affects the muscles and other tissues beneath the breast.
Cyclical breast pain affects up to 40% of women before menopause, most often in their 30’s. In about 8% of these women
the pain will be severe and interfere with their normal activities. The pain can go on for many years but most times it will go
away after menopause. In 20% of women it disappears on its own.
Non-cyclical breast pain is less common. It occurs more often in older women.
Caffeine does not cause breast pain. Although some women find their pain is less when they reduce or cut out caffeine,
studies have not been able to prove this. Caffeine is found in coffee, black and green tea, cola drinks, chocolate, cocoa and
some over the counter cold/pain medications.
One study has shown that reducing fat in the diet can decrease cyclical breast pain in some women. However, more research
is needed before women would be advised to make this change.
What effect does the birth control pill have on breast pain?
The birth control pill may cause breast pain, increase or decrease it. Some women may get breast pain for the first time
when starting on the birth control pill or changing to a different one. The mastalgia may slowly disappear. If not, a lower
dose or another brand could be tried.
How is hormone replacement therapy related to mastalgia?
Starting hormone replacement therapy can sometimes bring on breast pain that often settles down after a while. But it
can remain a problem for some women. If you think your pain is linked to the hormone therapy, talk with your doctor.
Sometimes changing the dosage or the form may help or you may wish to stop it.
Are there any supplements or herbs that might help?
Vitamins E and B6 have not been proven to be helpful in the treatment of mastalgia.
Herbs for the treatment of mastalgia have not been well researched. They cannot be recommended at this time. In fact,
ginseng may cause breast pain.
Evening primrose oil. A few studies have shown a dose of 3000 mg a day to be helpful in treating breast pain. However,
the best studies do not support its use. Talk with a pharmacist about any possible side effects or drug interactions.
Flaxseed. Two tablespoons of crushed flaxseed (not flaxseed oil) taken daily for 3 months was found to be effective for
cyclical breast pain in one study. Talk with a pharmacist about any possible side effects or drug interactions.
Danazol and Tamoxifen can be used to treat mastalgia. You may wish to discuss them with your doctor. Both drugs come
with side effects that need to be thought about. However using the lowest dose of the medication can often lessen these
side effects.
Have a complete breast examination. Knowing that you don’t have cancer often makes it easier to cope with the pain.
Keep track of the pain. Keep a daily diary and write down if you have pain and if it is mild, moderate or severe. Record
the first day of your menstrual period. It may be helpful to mark down any days you have increased stress.
Make sure you are wearing the right type and size of bra. The bra should give good support. If in doubt you can go to a
store that can fit you for a bra.
Look for ways to reduce stress and relax.
Talk with your doctor or pharmacist about pain medication. Ones that may help are ibuprofen (e.g. Advil, Motrin);
acetaminophen (e.g. Tylenol); diclofenac gel - a nonsteroidal anti-inflammatory medication (by prescription).
Record the amount of breast pain you have each day by shading in each box as shown.
This brochure is based on the SOGC Clinical Guideline
#170 on Mastalgia published in the January 2006 issue of the JOGC.
Last Updated May 4, 2011
What causes breast pain?
The cause of breast pain is not known but it may be related to:
Hormonal changes
Fibrocystic changes in the breast
Cysts in the breast
Inflammation of the breast bone and ribs
Choosing the right bra size
Make sure you are wearing the right type and size of bra. The bra should give good support. If in doubt you can go to a store that can fit you for a bra.
Clinical Practice Guideline
#170-
The Society of Obstetricians and Gynaecologists of Canada (SOGC)
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