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September 29, 2025/Living Healthy/Women's Health

Why Are Your Breasts Itchy?

Dry skin, eczema, allergies and infections can all cause itchiness — but in some cases, itching may signify a more serious health condition

Female patient talking with healthcare provider

There’s nothing quite as annoying as an itch — especially when it affects a part of your body that isn’t socially acceptable to scratch in public.

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So, what causes itchy breasts? And how can you find relief?

A number of factors could be at play, ranging from fleeting skin conditions to more serious concerns. Let’s find out more from breast health specialist and surgical oncologist Margaret E.G. Thompson, MD.

Does an itchy breast mean cancer?

Let’s get this out of the way right up front: Having itchy breasts isn’t typically a sign of breast cancer. But any persistent breast symptom, including breast pain, should be evaluated by a healthcare provider just to be sure.

“The one thing I would worry about is if the nipple itself looks abnormal in some way,” Dr. Thompson flags. “A rare form of breast cancer, called Paget’s disease, can present in this way and may cause itching.”

Itching can also develop after you’ve had breast surgery or cancer treatments, like chemotherapy, radiation or hormonal therapy.

“If you’ve previously had any of these treatments, follow up with your care team to discuss the itchiness you’re experiencing,” she advises.

What causes itchy boobs?

Often, itchy breasts are a sign of noncancerous skin conditions like dryness, allergies or even yeast infections.

“If a skin condition is causing your itchiness, you’ll often notice an accompanying breast rash or other visible signs,” Dr. Thompson says. “But there are other possible culprits, too.”

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Dr. Thompson walks us through possible skin-related causes and more.

Dry skin

You might associate dry skin with other areas of the body, like hands and elbows, but it can strike anywhere — including your chest. It happens when your skin doesn’t get enough moisture, making it especially common in the cold, dry winter months.

What to do about it: “If dry skin is the cause of itchy breasts, a good moisturizer can help soften your skin, restore your skin barrier and, ultimately, relieve the itch,” Dr. Thompson recommends.

Allergies and other irritations

“The skin on your breasts is susceptible to irritation and allergies, just like the rest of your skin is,” Dr. Thompson says. “In some cases, it can even be a result of the bra you’re wearing.”

Common triggers include:

  • Synthetic fabrics, like polyester and nylon
  • Latex, which may be found in your bra’s elastic straps and bands
  • Metal underwires, like those made of nickel
  • Chemicals and dyes from the clothing manufacturing process

Other common allergens and irritants that can affect your breasts include:

  • Laundry detergent or dryer sheets
  • Perfumes, scented soaps and fragranced lotions
  • Outdoor irritants, like grass and pollen

Allergies and irritation often come with symptoms that go beyond itchiness, like redness, rashes and even blisters, depending on the severity of your reaction.

What to do about it: “If you can identify what’s triggering your symptoms, remove the culprit by changing detergent or switching to underwire-free bras,” Dr. Thompson advises. “If symptoms persist, are very severe or if you cannot find the cause, make an appointment with a healthcare provider.”

Yeast infections

Did you know that you can get a yeast infection under your breasts? It happens when a type of yeast called Candida grows on your skin. And it thrives in warm, moist environments — like the underside of your breasts.

In addition to itchiness, this fungal infection can cause tenderness, pain and skin that looks raised, swollen and shiny. Risk factors include:

  • Having large breasts
  • Wearing tight clothing
  • Sweating
  • Being in warm, humid climates
  • Having diabetes
  • Taking certain medications, like antibiotics or immunosuppressants
  • Having a weakened immune system

What to do about it: Keeping your skin dry, wearing loose and breathable fabrics, and maintaining good hygiene can help prevent these infections. Contact a healthcare provider for their guidance.

Under-breast yeast infections can often be treated with over-the-counter antifungal cream or ointment, but you might need prescription-strength medication.

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Changes in breast size

Your breasts could feel itchy because they’re getting bigger or smaller. Even if you don’t see stretch marks appearing on your skin, itchiness can be a sign that your skin is rapidly stretching or shrinking, like from:

  • Weight loss or gain
  • Pregnancy
  • A growth spurt (like during puberty)

“Stretch marks can look like sunken lines in your skin,” Dr. Thompson explains. “Depending on your skin tone, they may range in color from red to purple to brownish. Eventually, they fade to a glossy silver or white and become less noticeable.”

What to do about it: Fortunately, stretch marks are only itchy in their initial stages. In the meantime, keep your skin moisturized with unscented lotion or cocoa butter, which can help relieve itchiness.

Heat rash

When your breasts are confined to a bra or other tight clothing, you could experience heat rash — little bumps that feel prickly or itchy. It happens when sweat glands become blocked or when sweat stays on your skin for a long time.

“Based on the placement of your bra, heat rash can be especially common underneath the breasts, like on very hot days or in otherwise warm environments,” Dr. Thompson notes.

What to do about it: Once you cool down, heat rash will ultimately fade away. To speed the process along, you can remove your bra and pat your breasts down with a cool or lukewarm washcloth.

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Eczema

Eczema (atopic dermatitis) is a chronic skin condition that can affect skin anywhere on your body. Breast eczema can make the skin of your breasts look or feel:

  • Dry
  • Discolored
  • Itchy
  • Bumpy

What to do about it: “Moisturizing creams and ointments are better for eczema than lotions are, and hydrocortisone cream or ointment may also help,” Dr. Thompson says. “But in general, if you’re living with eczema, your best bet is to speak with a dermatologist about how to best manage it.”

Mastitis

Mastitis is a breast infection that’s usually caused by an oversupply of breast milk that puts pressure on your milk ducts. But you can get mastitis without breastfeeding, too, usually from a bacterial infection or other breast condition.

“Though itchiness is a common symptom of mastitis, it’s typically also very painful,” Dr. Thompson points out. “You may have flu-like symptoms and notice hard lumps or red streaks on your breasts.

What to do about it: Using ice packs, taking over-the-counter pain relievers and wearing supportive bras can help. But if home remedies don’t help with your symptoms, you should see your healthcare provider for antibiotics. They may also want to rule out other conditions, like inflammatory breast cancer.

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Other medical conditions

In rare cases, itchy skin can be a symptom of an underlying medical condition, like:

  • Diabetes
  • Kidney disease
  • Liver disease
  • Thyroid disease

What to do about it: If you can’t identify the source of your itchiness, talk to a healthcare provider. They may order additional testing or a breast biopsy or refer you to a breast specialist.

Final thoughts

Itchy breasts usually aren’t a sign of a major health concern and can often be treated at home. Issues like heat rash fade quickly, while concerns like eczema can take a little more effort to manage.

But if the itchiness gets worse or doesn’t go away, or if you have other concerning symptoms, don’t hesitate to make an appointment with a healthcare provider.

“They can help get to the bottom of the issue,” Dr. Thompson says, “and finally help you find some relief.”

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