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Oral thrush is a condition in which the fungus Candida albicans accumulates on the lining of your mouth.

Oral thrush causes creamy white lesions, usually on your tongue or inner cheeks. The lesions can be painful and may bleed slightly when you scrape them. Sometimes oral thrush may spread to the roof of your mouth, your gums, your tonsils or the back of your throat.

Although oral thrush can affect anyone, it's more likely to occur in babies and in people who wear dentures, use inhaled corticosteroids or have compromised immune systems. Oral thrush is a minor problem if you're healthy, but if you have a weakened immune system, symptoms of oral thrush may be more severe and difficult to control.

Aug. 20, 2011