Oral thrush is a fungal infection that’s caused by yeast known as candida. …read moreSee less
White patches may appear in the mouth, along with an unpleasant taste. The fungus responsible for oral thrush is naturally found in the mouth and digestive system, but if something triggers them, the yeast can multiply and cause oral thrush. But there are treatments available to relieve your thrush symptoms and to get your mouth feeling fresh again.