12 Symptoms of Breast Cancer Explained

12 Symptoms of Breast Cancer Explained

You may have heard about our partnership with Know Your Lemons. If not, please read more about it here.

Breast cancer is near and dear to our heart and Simple Wishes donated 3% of our profits on an ongoing basis to Know Your Lemons to help further the amazing work they do to help women learn about and detect breast cancer as early as possible. We love what this organization does and how they make educating women on an often scary subject, understandable and colorful.

We’d like to share more details from Know Your Lemons on the 12 symptoms of breast cancer to keep all of us better informed We all know, knowledge is power, so here’s so more power, mamas.

Breaking down the 12 symptoms of breast cancer:

  1. Hard Lump
  2. Thick Area
  3. Dimple
  4. Nipple Crust
  5. Red or Warm
  6. New Fluid
  7. Skin Sores
  8. Bump
  9. Sunken Nipple (newly inverted)
  10. Growing Vein
  11. New Shape or Size
  12. ”Orange peel” skin

Hard Lump

The most common sign of breast cancer is a lump, deep in the breast. It often feels hard, like a lemon seed, and usually immovable. It can be any shape or size. Most lumps turn out to be harmless, such as a fluid filled cyst or a fibroadenoma. But if you notice a hard lump (or any change) that doesn’t come and go with your menstrual cycle, don’t ignore it. The sooner breast cancer is found, the more easily it can be treated.

Thick Area

You may notice that a part of your breast feels different from the rest, being less "squishy" and more "dense." This can be a normal part of menstruation or breastfeeding. However, a thickening in your breast that doesn’t go away or gets worse, could also be a sign of breast cancer. Note: This is not to be confused with "breast density" which doesn't refer to how a breast feels. Breast density can only be determined through a mammography report.


A dimple (or indentation) in the breast can happen when tight clothing leaves a temporary mark in the skin. But if a dimple in the breast doesn’t go away, it can also be a sign of breast cancer. A dimple can be more easily seen when lifting your arms up above your head to see if the whole breast skin moves with you as you raise and lower your arms. (Pro tip: Having a light source directly overhead can also help cast shadows to show indents more clearly too.)

Nipple Crust

Crust on the nipple can be a harmless skin condition, like eczema, or is a common problem with breastfeeding. But if skin remedies don't fix the problem, it could be a sign of breast cancer called “Paget’s disease.” This is when cancer cells spread inside the breast and live in the nipple, creating a scab-like red or white crusted surface that can be sore and doesn’t go away.

Red or Warm

Typically, this is an infection or a skin symptom common to developing breasts, breastfeeding or eczema. If time, antibiotics or other treatments don’t improve the symptom, it could be a sign of Inflammatory Breast Cancer. This type of cancer blocks the flow of lymph in the breast, which causes swelling and redness but without an obvious hard lump. This may also make the breast feel warm or hot, or cause a burning sensation. The skin of the breast may also appear pink, reddish purple, or bruised. If antibiotics don't clear up the symptoms, then it’s best to see a breast specialist. Note: This is not the same as breast tenderness, which comes and goes with the menstrual cycle.

New Fluid

Discharge from the nipple is common and is harmless (benign) most of the time. It is usually related to developing breasts, infection, cysts, pregnancy, or breastfeeding. However, if fluid is leaking from the breast outside of these changes, it is something that should be checked out, especially if it is clear or contains blood.

Skin Sores

Breast cancer can sometimes build up to the point that it breaks down the skin of the breast to form an open wound. Infection may cause a bad smell and/or leakage. This is usually accompanied by an obvious hard lump. This is an advanced sign of the disease, meaning it has been present for some time.


Sometimes a cancerous lump is on the surface of the breast. However, not all lumps and bumps are cancer. Many are cysts (fluid collections) or harmless, benign lumps made of various tissue (fibroadenomas). Many women have lumpy, bumpy breasts. However, if it’s something that concerns you, show a doctor. 

Sunken Nipple

Retracted nipples can be a normal shape of the breast (from when the breast was first developed). However, if you notice your nipple sinking, flattening, or turning, it could be a sign of a new breast cancer tumor forming underneath, pulling the nipple toward it as it grows.

Growing Veins

"Enlarged veins" is one of the rarer symptoms of breast cancer and is normally included in general "other unusual changes" or "skin changes" categories. Newly appearing blood vessels or veins are usually not a sign of cancer. More often it is connected to weight gain, breastfeeding, or Mondor's disease. However, if veins become more pronounced outside of these changes, on the breast or near the collarbone (and sometimes accompanied with a swollen arm), this could be a sign of a breast cancer tumor drawing more blood to itself and the vein swelling in size to allow for additional blood flow.

New Shape or Size

It’s common for one breast to be different in size and shape from the other. This kind of variety is what our bodies are known for. Breastfeeding can also cause changes in size or shape as a result of milk production. But if one breast changes size, flattens, swells, or droops unexpectedly—and doesn't seem to be connected to your menstruation cycle—this could be a sign of breast cancer.

Orange Peel Skin

When the skin of the breast looks like the dimpled skin of an orange, this is a symptom of breast cancer known as “peau d’orange,” (how the French say "orange peel"). With peau d’orange, the breast swells to the point it causes hair follicles to look like lots of little dimples. 
The skin may or may not change color. Peau d'orange is a sign of Inflammatory Breast Cancer. This type of cancer blocks the flow of lymph in the breast, which causes swelling and redness but without an obvious hard lump.

We know this is a lot of information to take it, and again, even more info can be found at Know Your Lemons. They also have resources like Breast Quizzes and more to help you learn more about early detection.

Here’s to your health and your lemons,

The Simple Wishes mom squad