Yeast Infection Under Breast

A yeast infection under your breast is a fungal skin infection called candidiasis. A yeast called Candida causes candidiasis. Many types of yeast naturally live on your skin. In healthy people, this usually doesn’t cause any issues. But when there’s an overgrowth of Candida, the yeast can penetrate the surface of your skin, causing an infection.

Candidiasis can develop almost anywhere on the surface of your body. But it’s most frequently found in moist, warm areas of your skin, such as the skin folds under your breasts.