Yeast infection under the breast: how to recognize a rash


Candida is a yeast that lives both inside and outside of your body. It can be found in the intestines, mouth, vagina, and skin.

This yeast especially likes the warm, dark and moist folds of your skin, and the lower part of the breasts is the best place to plant them. Under normal conditions, Candida does not cause any problems.

But in some people, due to factors such as underlying health problems or breast size, the skin can break down and cause a rash (called diaper rash ). This rash can facilitate the entry of yeast, causing a yeast infection under the breast.

Yeast infections are technically yeast infections.

Katerina Cohn / Scientific Photo Library / Getty Images

What does a yeast infection look like under the breast?

A fungal rash may appear under the chest and along the upper torso, where the skin on the chest rubs against the skin on the torso. In fact, a rash under the breast is often a mirror image of a rash on the other side of the skin fold. The rash is also usually:

  • Red or reddish-brown appearance
  • pink
  • With oozing blisters and scabs
  • Itching
  • Causes pain

Causes and risk factors

Anyone can get a yeast infection on the skin, especially in dark, moist areas, such as under the chest. But these infections and rashes tend to be more common 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 levels. If the blood sugar level is not controlled properly, the yeast can overgrow the skin and lead to a yeast infection.

Diabetes can also predispose you to infection because it is believed to suppress your immune system, making it less capable of attacking foreign invaders such as fungi such as yeast, viruses, and bacteria that can cause infections.

Research shows that people with diabetes are more likely to get all kinds of infections than people without diabetes.

Big breasts

Large, heavy breasts, especially those that are not supported by a good bra, are more likely than small ones to rub against the skin on the upper torso, causing diaper rash and possible yeast infection.

Also, the skin under large breasts is more difficult to keep dry and well ventilated, creating a breeding ground for yeast infections.


Obese people can have deep skin folds and sweat more than those who weigh less, thanks to the thick layers of fat under the skin. Both of these factors can lead to problems with fungal skin infections.


The skin can become and remain excessively moist in hot and humid environments, giving the yeast ample opportunity to multiply and invade.


Tight clothing can irritate the skin, causing friction and rashes that promote penetration of yeast. Underwear, such as bras made from waterproof or non-absorbent fabrics, can trap moisture close to the skin.

Bras that do not lift or support provide some ventilation and drying under the breasts and can cause the skin to rub against the skin; These are even more factors that can lead to diaper rash and yeast infection.

Watch out

Because yeast is a fungus, yeast infections are treated with antifungal creams, ointments, and sprays.

Some antifungal medications are available without a prescription , but in severe cases, your healthcare provider may prescribe a prescription. Some of the medications used to treat fungal skin infections include:

  • Clotrimazole
  • Econazole
  • Ketoconazole
  • Miconazole
  • Tioconazole
  • Terbinafine
  • Amorolfina

If your rash is itchy, your doctor may prescribe a combination cream containing antifungals and steroids to soothe the itch. Most people see an improvement in about a week.


When it comes to yeast infections, the best defense is attack:

  • Keep the skin under the breasts clean. Wash your face in the morning and at night with a mild soap.
  • Dry well under the breasts after bathing. Use a hair dryer in a cool place to get what the towel lacks.
  • Talk to your doctor about using an over-the-counter desiccant or antifungal powder to manage problems.
  • Put on a cotton support bra. You can even try wearing a cotton shirt under your bra.
  • Ventilate your skin if possible (this may mean you need to be alone without a bra or shirt).
  • Wear loose clothing.
  • Change quickly into wet or sweaty clothing.
  • Lose weight, if necessary, to reduce breast size and reduce skin friction.
  • Limit your intake of sugary foods and keep your blood sugar under control if you have diabetes.

Get the word of drug information

Yeast is a natural fungus that can sometimes grow and cause infections of the skin, under the breast, and in other parts of the body. These infections are usually easy to treat with antifungal agents, and there is usually nothing to worry about.

If you notice a rash, see your doctor so it can be properly diagnosed and treated. It is especially important to check with your healthcare professional if the rash appears infected (for example, hot to the touch or wet and oozing).

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