Thrush is a common infection caused by a yeast called Candida albicans. This yeast lives on the skin and in the mouth, gut and vagina. Usually it's harmless, but sometimes changes in the body cause the yeast to grow rapidly. This can lead to an outbreak of thrush.
In adolescents, young adults, and middle age adults, an oral Candida infection should always be viewed as a possible symptom of an underlying medical problem, such as diabetes or HIV infection, and should be evaluated.
You can't catch thrush from kissing, hugging, sharing baths, towels, cups, plates or cutlery, or from toilet seats.
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