According to KidsHealth.org, signs of yeast infection in children are itching, redness and pain. Vaginal yeast infections can also include white vaginal discharge, pain specifically during urination and occasionally white patches on the skin near the vaginal area.
Additionally, MedicineNet.com states that Thrush, a yeast infection of the mouth and throat, can be detected by white, creamy, almost curd-like patches inside the mouth and on the surface of the tongue and throat. KidsHealth.org points out that yeast infections are a type of fungus and are easily prevented by keeping the vaginal area washed and dry. If infection does occur, a doctor can administer proper treatment and clear the infection in approximately a week.