Yeast infection under the breast: How to recognize a rash

Candida is a yeast that lives inside and outside of you. It can be found in your gut, mouth, vagina and skin.

This yeast especially likes the warm, dark, moist folds of the skin. Under your breasts is the main place it lives. under normal circumstances, Candida will not cause any problems.

But in some people — due to things like an underlying medical condition or breast size — the skin can break. This can cause a rash (called a chafing). This rash can allow yeast to penetrate, causing a yeast infection under the breast. Yeast infections are technically fungal infections.

This article discusses the symptoms of a yeast infection under the breast. It also covers causes, risk factors and treatments and how to prevent them.

What does a yeast infection under the breast look like?

A yeast rash may appear under the breasts and on the upper torso, where the skin of the breasts rubs against the skin of the torso. The rash under the breast is usually a mirror image of the rash on the other side of the skinfold. Rashes usually also:

  • Red or reddish-brown
  • Been proposed
  • oozing blisters and crusts
  • Is it itchy?
  • cause pain

Causes and Risk Factors

Anyone can get a yeast infection on their skin, especially in dark, damp areas like under the breasts. But these rashes and infections tend to occur more frequently in certain groups of people. Some things that increase your risk include:


When you have diabetes, your body cannot make or use insulin properly. Insulin is a hormone that controls blood sugar. If blood sugar is not well controlled, yeast can overgrow on your skin, leading to a yeast infection.

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Diabetes can also make you susceptible to infections. It is thought that it may suppress your immune system, making it less able to fight off foreign invaders. These include fungi such as yeast, viruses, and bacteria that can cause infections.

Studies have shown that people with diabetes are more likely to develop various infections than people without diabetes.


With diabetes, uncontrolled blood sugar can lead to an overgrowth of yeast on the skin. Diabetes can also make you prone to infections, including those caused by fungi such as yeast.

big breasts

Large, heavy breasts—especially without bra support—are more likely to rub against the skin of the upper torso. This creates a scraping rash and possible yeast infection.

What’s more, the skin under large breasts can be harder to keep dry and well-ventilated. This can set the stage for a yeast infection.


Obese people have deeper skin folds and may sweat more due to the thick layer of subcutaneous fat. Both of these factors can lead to yeast skin infection problems.


In hot and humid conditions, the skin can become over-moistened and stay over-moistened. This provides ample opportunities for the yeast to multiply and invade.


Tight clothing can rub against the skin, causing friction and rashes that allow the yeast to invade. Underwear, such as bras made from fabrics that are not breathable or absorbent, keep moisture close to the skin.

Bras that don’t lift have little cooling and drying ventilation under the breasts and can cause skin to rub against the skin. These factors also contribute to abrasions and yeast infections.


Tight-fitting and impermeable clothing can trap moisture on the skin. This can lead to a yeast infection.


Since yeast is a fungus, antifungal creams, ointments, and sprays can be used to treat yeast infections.

Some antifungal medicines are available over the counter (OTC), but in severe cases your healthcare provider may prescribe them. Some medications used to treat skin yeast infections include:

  • Clotrimazole
  • econazole
  • Ketoconazole
  • Miconazole
  • Tioconazole
  • Terbinafine
  • Amorolfine

If your rash is itchy, your healthcare provider may prescribe a combination cream containing an antifungal agent and a steroid to calm the itching. Most people will see improvement within a week or so.


Yeast infections under the breast can be treated with antifungal medications. These can be over-the-counter or prescription medications and may include creams, ointments, and sprays.


When it comes to yeast infections, the best defense is a good offense:

  • Keep the skin under your breasts clean. Wash with mild soap morning and night.
  • Thoroughly dry under the breasts after bathing. Use a hair dryer in a cool setting to help with missing towels.
  • Talk to your healthcare provider about using over-the-counter antifungal or hygroscopic powders to ward off problems.
  • Wear a supportive cotton bra. You can even try wearing a cotton T-shirt under your bra.
  • Ventilate the skin as much as possible. (This could mean going shirtless in private.)
  • Wear loose clothing.
  • Change wet or sweaty clothing promptly.
  • Lose weight if needed to help reduce breast size and limit skin friction.
  • If you have diabetes, limit your intake of sugary foods and control your blood sugar.


Yeast infections can occur when moisture is trapped under skin folds, such as under the breasts. The rash is usually red or reddish-brown and may have blisters or crusts. It may be painful or itchy.

Yeast infections under your breasts may be more likely if you have diabetes, have large breasts, or are obese. They can also occur in hot, humid climates, or when you’re wearing tight clothing that traps moisture on your body.

Treatment usually involves antifungal drugs. This can be an over-the-counter or prescription drug.

To prevent yeast infections, keep the skin under your breasts clean. Dry thoroughly and change wet clothes promptly. Wear a supportive cotton bra that lifts your breasts off your torso. If you have diabetes, take steps to control your blood sugar.

VigorTip words

Yeast is a naturally occurring fungus that can occasionally overgrow and cause skin infections—under the breasts and elsewhere on the body. These infections are usually easy to treat with antifungal medication and are usually nothing to worry about.

Whenever you notice a rash, consult your healthcare provider for proper diagnosis and treatment. It’s especially important to see your doctor if the rash appears to be infected, including feeling warm, moist, or oozing.