Premenstrual breast changes
Premenstrual swelling and tenderness of both breasts occurs during the second half of the menstrual cycle.
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 -- usually more so in the outer areas. There may also be an off and on or ongoing sense of breast fullness with dull, heavy pain, and tenderness.
Causes of Premenstrual breast changes
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 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, a high-fat diet, and too much caffeine.
- 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 and 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 and should be discussed with your health care provider.
When to Contact a Health Professional
Call your health care provider if:
- You have new, unusual, or changing lumps in breast tissue.
- You have one-sided (unilateral) lumps in breast tissue.
- You do not know how to properly perform a breast self-examination.
- You are a woman, age 40 or older, and have never had a screening mammogram.
- You have discharge from your nipple, especially if it is a bloody or brown discharge.
- Your symptoms are interfering with your ability to sleep, and diet changes and exercise have not helped.
What to Expect at Your Office Visit
Your health care 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).
A mammogram or breast ultrasound may be done to evaluate any abnormal finding on a breast exam. If a lump is found that is not clearly benign, you may need a breast biopsy.
These hormone medicines from your doctor 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 may reduce breast swelling and tenderness.
Danazol, a manmade androgen (male hormone), may be used in severe cases. If danazol does not work for you, other medications may be prescribed.
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: Mosby Elsevier; 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: Mosby Elsevier; 2012:chap 36.
|Review Date: 6/11/2014
Reviewed By: Cynthia D. White, MD, Fellow American College of Obstetricians and Gynecologists, Group Health Cooperative, Bellevue, WA. Also reviewed by David Zieve, MD, MHA, Isla Ogilvie, PhD, and the A.D.A.M. Editorial team.