Thrush is an infection caused by an excess of Candida albicans, a yeast which normally inhabits the intestines and vagina.

For women, the most common symptoms of thrush are a vaginal itch and a discharge that ranges from white to creamy yellow.

Men can get thrush too. Although often free of symptoms, the glans of the penis may become irritated and red after sex. Sometimes there is a trace of thrush on the penis. Thrush in the mouth and on the skin is common in babies.