Oral thrush is caused by an infection of Candida albicans, typically forming white plaques on the surface of the oral mucous membrane. These plaques generally appear as small, curd-like spots or dot-like patches that can merge into a large area and are difficult to wipe off. If forcibly removed, the underlying oral mucosa may become reddened, rough, and even bleed. Therefore, one should not attempt to wipe it off and instead should seek proper treatment. The usual treatment involves the local application of 2% baking soda solution. This type of oral thrush generally does not affect a child's appetite or quality of life.