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, tonsils or the back of your throat.
Although oral thrush can affect anyone, it's more likely to occur in babies and people who wear dentures, use inhaled corticosteroids or have compromised immune systems.