What is the main cause of yeast infection?

The fungus candida albicans is responsible for most vaginal yeast infections. Your lady parts naturally contains a balanced mix of yeast, including candida, and bacteria. Certain bacteria (lactobacillus) act to prevent an overgrowth of yeast. But that balance can be disrupted.

How do girls get yeast infections?

As girls mature and go through puberty, hormonal changes can make them more likely to get yeast infections. Sometimes, girls get yeast infections right before their menstrual periods. enceinte women are also more likely to get them. Yeast infections are not an STD (sexually transmitted disease).