If your breast looks red or swollen, there’s no need to panic. A tender area or rash on your breast often signals a common problem like an infection. In other cases, it's a symptom of a common, treatable skin condition.
Rarely, a rash and soreness can be signs of inflammatory breast cancer, a form of the disease that can grow quickly, often in weeks or months.
Here’s how you can tell what's going on.
Infected breast tissue, also called mastitis, is most common in women who are nursing. It can happen when milk gets trapped in your breast. You might also get it if something clogs one of your milk ducts or bacteria get into your breast through a cracked nipple.
Mastitis often happens within the first 6 to 12 weeks after you give birth, but sometimes women who aren’t breastfeeding get it, too.
If you have mastitis, your symptoms may come on without warning. Common signs include:
There are several common skin conditions that can put a rash on your breast, like:
Scabies. Bites from the human itch mite. They form a line of little bumps on your skin and get really itchy at night
Yeast. This fungus lives on your skin. When too much grows, it can lead to an itchy rash in places where skin touches skin.
Intertrigo. It happens when the skin under your breast rubs together too much. It can trap moisture and create friction. Besides a red or brown rash, your skin may swell and itch. It may have a funny smell.
Nipple eczema. It can lead to a rash around one or both of your nipples. The skin around them may get dry and scaly, or you could have a rash that feels moist to the touch. You may notice a burning feeling if you’re nursing. Nipple eczema often affects women about 5 to 6 months after giving birth.
More Serious Conditions
Inflammatory breast cancer symptoms result from a buildup of fluid in your breast. Many women don’t feel a lump. Instead, you may notice a rash that looks like an insect bite.
You could also have:
- Itching that doesn’t go away
- A nipple that goes inward or gets flat
- Swelling and redness that affect at least a third of your breast
- Pink, purple-red, or bruised skin
- Skin that looks ridged or pitted like an orange peel
- A sudden increase in breast size
- Breast tenderness or a “heavy” feeling
- Swollen lymph nodes under your arm or near your collarbone
Paget’s disease is a rare skin disorder that’s often linked to breast cancer in the tissues behind your nipple. It can cause a red, scaly rash. You could also have discharge or bleeding from your nipple.
What to Do for a Breast Rash
If you notice a change in your breasts, try not to worry. Because the hormones in your body are constantly changing, so are your breasts. Many of these differences aren’t cause for concern.
It can help to:
Avoid scratching. This will only make your rash worse.
Take a warm bath, or place a warm washcloth over your breast. This may help soothe your skin.
Look for a cause. Did you try a new perfume or laundry detergent? Stop using any recently added products and see if your rash improves.
When to See a Doctor
Signs that you should call your doctor right away include:
- Intense pain
- Red streaks coming from your breast
- Yellow or green pus
- Open sores
You should also see your doctor if any symptoms get worse. They’ll do an exam to figure out what’s causing your rash so they can prescribe the best treatment. Some simple rashes go away quickly with a special cream.
If you do have a breast infection, you’ll need antibiotics. Make sure you finish all your medicine, even if you start feeling better right away.
Unless your doctor suggests otherwise, you won’t need to stop nursing. Try to fully empty your breasts so you’re less likely to get an abscess -- a pocket of pus that may need draining.
Drink plenty of fluids and get lots of rest to help your body fight off a breast infection.
Your doctor may want you to get a mammogram. This can give them a better idea of what’s going on inside your breast.
If your symptoms don’t clear up soon, your doctor may also want to do a biopsy. They’ll remove a small piece of your breast tissue and look closely at it under a microscope.