Yeast is a type of fungus. The type that commonly causes vaginal yeast infections is called Candida albicans. They can live on the skin, in the mouth, digestive tract, and vagina without causing disease.
Their growth in the vagina is usually controlled by another type of bacteria that also inhabits it. However, sometimes the balance between these organisms is disturbed. For example, antibiotics can destroy natural protective bacteria, allowing fungi to multiply.
On the lining of the uterus, they can form a layer that can cause irritation, which can lead to symptoms such as itching, burning, and white vaginal discharge.
Men may also be affected. When this happens, the foreskin and glans may become inflamed.
With regard to the treatment of infection, an important condition is the observance of impeccable personal hygiene. The other partner should also be tested, even if there are no symptoms.