What Causes Yeast Infections?

Yeast infections are one of the most common fungal infections. They happen when a type of yeast called Candida grows out of control in your body. Candida normally lives on your skin and inside your body in small amounts without causing problems. But when something throws off the balance, the yeast can multiply and cause an infection.

What Causes Yeast Infection?

Several factors can upset the natural balance of yeast and bacteria in your body:

Antibiotics are a major cause. While they kill harmful bacteria, they also destroy the good bacteria that keep yeast in check. This allows Candida to overgrow.

Hormone changes during pregnancy, your menstrual cycle, or from birth control pills can also trigger yeast infections. These shifts affect the environment where yeast lives.

High blood sugar gives yeast the food it needs to grow. People with diabetes or uncontrolled blood sugar have a higher risk. A weakened immune system from illness or medications like steroids also makes you more prone to yeast infections.

Can a Yeast Infection Go Away on Its Own?

In rare cases, a mild yeast infection may clear up without treatment. This can happen if your immune system is strong and symptoms are very mild. However, doctors recommend treating all yeast infections, even minor ones.

Without treatment, symptoms like itching and burning can persist for weeks. The infection may also get worse or keep coming back. In some cases, untreated yeast infections can lead to redness, swelling, and cracks around the affected area.

How Long Does a Yeast Infection Last?

With proper treatment, most yeast infections clear up within 3 to 7 days. Mild cases may improve in as few as 3 days. You may notice itching and burning start to ease within the first 24 to 72 hours of treatment.

More severe infections take longer to heal and may require prescription medication. If you get four or more yeast infections in a year, your doctor may recommend treatment for up to six months.

Treatment Options

Over-the-counter antifungal creams, ointments, or suppositories are available at most pharmacies. These typically come in 3-day or 7-day doses. For stubborn or recurring infections, your doctor may prescribe oral antifungal pills.

When to See a Doctor

See a healthcare provider if this is your first yeast infection, if symptoms are severe, or if the infection keeps returning. Many conditions can cause similar symptoms, so proper diagnosis is important for effective treatment.