A yeast infection under the breast is commonly diagnosed in breastfeeding women, but it can also occur in women with high glucose levels or thyroid disease. These conditions can trigger the fungi naturally present on the skin to mulitply in an uncontrolled manner, leading to an infection.
A yeast infection is also more likely to develop in very large, unsupported breasts, as sagging breasts that rub against the chest will lead to a naturally warmer, moist skin environment. These conditions are ideal for increased fungal infections.
A yeast infection under the breast can also be referred to as candidal intertrigo, which is used to describe yeast infections under skin folds. This type of candidiasis is common in people who are obese or overweight.
Main symptoms
A yeast infection under the breast can present with symptoms like:
- Itching and redness under the breast
- Skin peeling
- Foul odor
- Whitish fluid in the area
- Cracks in the skin.
Women with thyroid disorders (like hypoparathyroidism), hypoadrenalism, vaginitis, high blood sugars, or a recent use of antibiotics or corticosteroid-based ointments are at a higher risk of developing a yeast infection under the breast.
A diagnosis is confirmed by a family doctor or dermatologist, who will start by assessing the presenting symptoms. Testing may not be necessary in every case, and will usually only be ordered if first-line treatment was not successful to eliminate symptoms.
Treatment options
The doctor may order oral or topical antifungal medications like fluconazole or imidazole to treat the infection. Topical antifungals should be applied 1 to 2 times a day for up to 4 weeks. To speed-up recovery, affected skin should be kept dry, either by reducing hot weather, avoiding clothing or applying baby powder. Cornstarch should not be applied as this encourages the development of fungi, making the situation worse.
You doctor may advise you to wear a cotton-based bra instead of one made from a synthetic material. Some women may find it beneficial to change their bra more than once a day or to wear loose cotton blouses to reduce sweat production in the area.
Although you do not need to eliminate carbohydrates completely from your diet, you should reduce your carb intake and your sugar intake, as these types of foods (e.g. rice, pasta, potatoes, breast and sweets) can promote yeast cell proliferation.
Read more about high-carb foods that you should avoid eating when treating a yeast infection.