June 28, 2024
Content created for the Bezzy community and sponsored by our partners. Learn More
Photography by Amor Burakova/Stocksy United
Certain breast cancer treatments can cause changes, breakage, and irregular growth in the nails. You can take steps to care for your nails to help prevent some of these side effects.
There can be multiple side effects from treatment for breast cancer, including triple-negative breast cancer (TNBC). One of these side effects can be fingernail and toenail changes.
These changes don’t come from the type of breast cancer you have but from the treatments themselves. They can happen in one, a few, or all of your nails and can vary in severity.
It can help to know what to expect and how to manage nail changes while undergoing treatment. Read on to learn more.
The nail is a complex structure. Changes can happen when cells in one or more parts of the nail become damaged or modified.
Depending on the treatment, changes can occur in the nail plate, the nail bed, and other parts of the nail. Some changes start as soon as you begin treatment, while others may take months to become noticeable.
For example, certain chemotherapy drugs can alter the rate of cell division or keratin production in the nail matrix, the tissue at the base of each nail that leads to nail growth.
When the nail matrix stops working normally, the nails may change color, become more brittle or thin, or grow in an irregular formation.
Treatments for TNBC and other types of cancer that can cause nail changes include chemotherapy, radiation therapy, and targeted therapies.
Depending on the treatment, you might experience several symptoms, including:
Nail changes during cancer treatment are most often due to chemotherapy medications, but targeted therapies can also cause them.
Some of these changes may go away quickly, while some may take longer as your nails slowly grow out. Others may be permanent.
If you’re undergoing chemo, your nails may darken and become cracked. Some people experience pain in their cuticles.
Various types of chemotherapy for breast cancer, including TNBC, can cause nail changes.
These include:
Nail changes caused by specific targeted therapies for TNBC include:
Treatment for TNBC sometimes includes immunotherapy, which can also come with nail changes.
These include:
Hormone therapies like tamoxifen do cause nail changes, but they’re used to treat hormone-sensitive types of cancer — not TNBC.
TNBC cells are not hormone-sensitive because they don’t have estrogen or progesterone receptors, so they don’t respond to these drugs.
Note: Radiation can cause nail darkening, but this isn’t the case if radiation is targeted to the breasts.
You can take steps to manage nail changes while you’re receiving cancer treatment to keep your nails looking and feeling their best.
Keep an eye out for other symptoms that may be related to your treatment.
These can include:
You might experience nail changes during treatment for TNBC from other related factors.
For example, cancer treatments and some cancers themselves can lead to nutrient deficiencies, which can cause nail changes.
Infections may cause changes to the nail as well, so it’s important to take steps to prevent them.
Here are some answers to frequently asked questions about breast cancer and your skin and nails.
Breast cancer itself does not affect your fingernails, but many treatments can. These include:
Certain cancers directly affect fingernails, like subungual melanoma, a rare form of skin cancer. Signs of this cancer in fingernails include brown-black streaks or discoloration of the tissue under the nail, especially when the discoloration also affects the surrounding skin.
Chemotherapy drugs can have short and long-term effects on your fingernails. The effects you’ll see depend on the drug.
They include:
It may not be possible to prevent changes, but you can take steps to help keep the nails from breaking or becoming infected.
Triple-negative breast cancer (TNBC) and other types of breast cancer grow inside the breast, not on the skin.
However, people with breast cancer, including those with TNBC, may experience breast skin changes like dimpling or puckering.
If you’re going through treatment for TNBC, you might notice changes in your fingernails, toenails, and surrounding skin.
Nail changes are a common side effect of many radiation, chemotherapy, and targeted treatments.
Some nail changes can be permanent, but after treatment ends, many nail changes go away and healthy nails typically regrow.
Medically reviewed on June 28, 2024
24 Sources
Have thoughts or suggestions about this article? Email us at article-feedback@bezzy.com.