ON THIS PAGE: You will find out more about changes and other things that can signal a problem that may need medical care. Use the menu to see other pages.

People with breast cancer may experience the following symptoms or signs. Symptoms are changes that you can feel in your body. Signs are changes in something measured, like by taking your blood pressure or doing a lab test. Together, symptoms and signs can help describe a medical problem. Sometimes, people with breast cancer do not have any of the symptoms and signs described below. Or, the cause of a symptom or sign may be a medical condition that is not cancer.

Talk with your doctor if you have the following signs or symptoms:

• A lump that feels like a hard knot or a thickening in the breast or under the arm. If there is a small amount of breast tissue, it may be easier to feel a small lump.

• Any new irregularity on the skin or nipple, such as redness, scaliness, puckering, or a discharge from the nipple

If you are concerned about any changes you experience, please talk with your doctor. Your doctor will ask how long and how often you’ve been experiencing the symptom(s), in addition to other questions. This is to help find out the cause of the problem, called a diagnosis.

If cancer is diagnosed, relieving symptoms is an important part of cancer care and treatment. Managing symptoms may also be called "palliative care" or "supportive care." It is often started soon after diagnosis and continued throughout treatment. Be sure to talk with your health care team about symptoms you experience, including any new symptoms or a change in symptoms.

The next section in this guide is Diagnosis. It explains what tests may be needed to learn more about the cause of the symptoms. Use the menu to choose a different section to read in this guide.