Vaginal yeast infection is a disease characterized by signs, symptoms of vaginitis, vaginitis and presence of fungi (mainly Candida). Symptoms of vaginal yeast infection may include: severe itching, painful urination and sexual intercourse, severe nausea (white cheese, no unpleasant odor except superinfection).

Candida albicans is the main causative agent of yaginal yeast infection. These fungi are part of the vaginal microenvironment without causing symptoms in some of healthy women. 

Vaginal yeast infections occur mainly in women of reproductive age.

The pathogenesis of vaginal yeast infection is associated with vaginal microflora imbalance, overgrowth of fungus, and invasion of fungal epithelial cells. Therefore, it is not considered a sexually transmitted disease.