Oral thrush is a fungal infection in the mouth caused by an overgrowth of the Candida yeast. It often appears as white patches on the tongue, inner cheeks, and sometimes the throat. These patches can be painful and may bleed if scraped. Oral thrush is more common in individuals with weakened immune systems, such as those with HIV/AIDS, diabetes, or those taking certain medications like antibiotics. Treatment for oral thrush typically involves antifungal medications, which can be prescribed by a healthcare provider. Maintaining good oral hygiene and managing underlying health conditions can help prevent its recurrence. If left untreated, oral thrush can spread to other parts of the body.