Vaginal Yeast Infection or Candidiasis is caused by an imbalance of the yeast cells in the vaginal area, due to ph levels and acid balance. The body naturally contains a certain amount of bacteria, and yeast feed on the bacteria, and when an imbalance occurs, the yeast concentration causes symptoms or an infection to develop. Itching, redness, soreness, or a “cottage cheese like” discharge normally characterizes the infection. It is estimated that 75% of women have had an infection at least once in their life, and many have had numerous recurrences.