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Breast Cancer in Women

Medically reviewed by Last updated on Mar 5, 2023.


Breast cancer

develops when cells in the breast grow out of control. Several types of breast cancer can develop, depending on which cells turn into cancer. Most breast cancers start in the tissue or ducts of the breast.

Common signs and symptoms include the following:

  • Swelling or a lump in your breast, or swollen lymph nodes under your arm
  • Bleeding or clear discharge from your nipple
  • Breast that aches, or feels sore or heavy
  • Dimpled breast skin (like an orange peel), or a sudden red area on the skin
  • Nipple that looks like it has been pushed in

Call your local emergency number (911 in the US) for any of the following:

  • You have chest pain when you take a deep breath or cough.
  • You suddenly feel lightheaded or short of breath.
  • You cough up blood.

Seek immediate care if:

  • Your arm or leg feels warm, tender, and painful. It may look swollen and red.

Call your doctor or oncologist if:

  • You have a fever.
  • You have any new or different pain.
  • You are vomiting and cannot keep food or liquids down.
  • You are depressed or feel that you cannot cope with your illness.
  • You have questions or concerns about your condition or care.

Treatment for breast cancer

depends on the size of the tumor and if it has spread. Treatment also depends on your age and the type of breast cancer you have. Some types grow more slowly than others. Your healthcare provider will talk to you about the benefits and risks of treatments that might be right for you. Your provider will help you decide on treatment that best fits your needs and goals:

  • Hormone medicine may be used if the cancer is sensitive to hormones.
  • Radiation therapy uses high-energy x-ray beams to kill cancer cells.
  • Chemotherapy medicines are used to kill cancer cells. You may receive one medicine or a combination of medicines.
  • Inhibitor medicines may be given to help destroy the cancer cells. One medicine helps your immune system kill the cells. Another medicine makes the cells die by preventing them from being repaired. This helps keep cancer from progressing as quickly.
  • Targeted therapy is medicine that finds markers on some cancer cells and kills the cells.
  • Surgery may be used to remove the tumor. Surgery called mastectomy may be used to remove all or part of your breast. A mastectomy may be done to treat breast cancer or prevent cancer from spreading.

Breast checks

include the following:

  • Breast self-exams mean you check your breasts for changes. If you have monthly periods, examine your breasts after your period is over. Breast self-exams make you aware of how your breasts look and feel normally. Contact your oncologist if you notice any breast changes. Ask for more information about how to do breast self-exams.

  • Mammograms may be recommended. Ask if and how often you need a mammogram. If you are having monthly periods, schedule your mammogram for the first 2 weeks following your monthly period.

Treatment options

The following list of medications are in some way related to or used in the treatment of this condition.

View more treatment options

Manage breast cancer:

  • Ask questions. You will receive a lot of information about breast cancer and treatment. Questions will help you understand the information better. You may not have questions until after your appointments. Write your questions down. Call or e-mail your doctor with any questions you have.
  • Eat a variety of healthy foods. Healthy foods include fruits, vegetables, whole-grain breads, low-fat dairy products, beans, lean meats, and fish. Ask if you need to be on a special diet.
    Healthy Foods
  • Drink liquids as directed. Ask how much liquid to drink each day and which liquids are best for you. Drink extra liquids to prevent dehydration. You will also need to replace fluid if you are vomiting or have diarrhea from cancer treatments.
  • Exercise as directed. Ask your oncologist about the best exercise plan for you. Exercise may help decrease the side effects of treatment, such as nausea, vomiting, and weakness. It may also help improve your mood. Stop exercising if you feel pain in your chest, have trouble breathing, or feel dizzy. Do not exercise if you have a fever or if you had anticancer medicines through an IV in the last 24 hours.
    Hispanic Family Walking for Exercise
  • Do not smoke. Nicotine can damage blood vessels and make it more difficult to manage breast cancer. Smoking also increases your risk for new or returning cancer and delays healing after treatment. Do not use e-cigarettes or smokeless tobacco in place of cigarettes or to help you quit. They still contain nicotine. Ask your provider for information if you currently smoke and need help quitting.
  • Limit or do not drink alcohol as directed. Alcohol increases the risk for new or returning breast cancer. If you choose to drink, limit alcohol to 1 drink per day. A drink of alcohol is 12 ounces of beer, 5 ounces of wine, or 1½ ounces of liquor.
  • Talk to your provider about family planning. Some types of treatment, such as chemotherapy, may affect your ability to have a baby. Your provider will talk with you about options if you want to have children.

Follow up with your doctor or oncologist as directed:

You will need to see your oncologist for ongoing treatment and to check for side effects of treatments. Write down your questions so you remember to ask them during your visits.

© Copyright Merative 2023 Information is for End User's use only and may not be sold, redistributed or otherwise used for commercial purposes.

The above information is an educational aid only. It is not intended as medical advice for individual conditions or treatments. Talk to your doctor, nurse or pharmacist before following any medical regimen to see if it is safe and effective for you.

Learn more about Breast Cancer

Treatment options

Care guides

Symptoms and treatments guides (external)

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.