Hormone changes during the menstrual cycle likely lead to breast swelling. More estrogen is made early in the cycle and it peaks just before mid-cycle. This causes enlargement of the breast ducts.The amount of progesterone peaks near the 21st day (in a 28-day cycle). This causes growth of the breast lobules (milk glands).
Premenstrual breast swelling is often linked with:
Premenstrual breast tenderness and swelling probably occur to some degree in nearly all women. More severe symptoms may occur in many women during their childbearing years.The rate may be lower in women taking birth control pills.
Risk factors may include:
- Family history
- High-fat diet
- Too much caffeine
Symptoms of premenstrual breast tenderness may range from mild to severe. Symptoms usually:
- Are most severe just before each menstrual period
- Improve during or right after the menstrual period
Breast tissue may have a dense, bumpy, "cobblestone" feel to the fingers. This feel is usually more in the outer areas. There may also be an off and on or ongoing sense of breast fullness with dull, heavy pain, and tenderness.
Premenstrual swelling and tenderness of both breasts occurs during the second half of the menstrual cycle.
- Eat a lower fat diet.
- Avoid caffeine (coffee, tea, and chocolate).
- Avoid salt 1 to 2 weeks before your period starts.
- Get vigorous exercise every day.
- Wear a well-fitting bra day and night to provide good breast support.
You should practice breast awareness. Do check your breasts for changes at regular intervals.
The effectiveness of vitamin E, vitamin B6, and herbal preparations such as evening primrose oil are somewhat controversial. This should be discussed with your health care provider.
What to Expect at Your Office Visit
Your provider will take your medical history and do a physical examination. The provider will check for breast lumps, and will note the qualities of the lump (firm, soft, smooth, bumpy, and so on).
These medicines from your provider may reduce or eliminate symptoms:
- Injections or shots that contain the hormone progestin (Depoprovera). A single shot works for up to 90 days. These injections are given into the muscles of the upper arm or buttocks. They relieve symptoms by stopping menstrual periods.
- Birth control pills.
- Diuretics (water pills) taken before your menstrual period. These pills may reduce breast swelling and tenderness.
- Danazol may be used in severe cases. Danazol is a manmade androgen (male hormone). If this does not work for you, other medicines may be prescribed.
When to Contact a Medical Professional
Call your provider if you:
- Have new, unusual, or changing lumps in breast tissue
- Have one-sided (unilateral) lumps in breast tissue
- Do not know how to properly perform breast self-examination
- Are a woman, age 40 or older, and have never had a screening mammogram
- Have discharge from your nipple, especially if it is a bloody or brown discharge
- Have symptoms that interfere with your ability to sleep, and diet changes and exercise have not helped
Alvero R. Premenstrual syndrome. In: Ferri FF, ed. Ferri's Clinical Advisor 2017. Philadelphia, PA: Elsevier; 2017:1031-1032.
Jokich PM, Newell MS, Bailey L, et al; American College of Radiology. ACR appropriateness criteria, breast pain. Updated 2016.
Katz VL, Dotters D. Breast diseases: diagnosis and treatment of benign and malignant disease. In: Lentz GM, Lobo RA, Gershenson DM, Katz VL, eds. Comprehensive Gynecology. 6th ed. Philadelphia, PA: Elsevier Mosby; 2012:chap 15.
Lentz GM. Primary and secondary dysmenorrhea, premenstrual syndrome, and premenstrual dysphoric disorder: etiology, diagnosis, management. In: Lentz GM, Lobo RA, Gershenson DM, Katz VL, eds. Comprehensive Gynecology. 6th ed. Philadelphia, PA: Elsevier Mosby; 2012:chap 36.
The American College of Obstetricians and Gynecologists. Premenstrual syndrome (PMS). Updated January 2015.