Oral thrush can be painful, and it can cause you to lose your sense of taste temporarily. It mostly affects your mouth, covering it with small, white cuts. If the infection becomes severe, it can spread into your esophagus. Candidiasis of the esophagus can make it hard to swallow.
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RealAge answeredOral thrush, also known as candidiasis, causes velvety white patches on your tongue, cheeks, and sometimes other parts of your mouth. The patches may be painful and can make it hard to swallow. You may also have a cottony feeling in your mouth and lose your sense of taste. If your immune system is weakened from cancer, HIV/AIDS, or other serious health conditions, thrush can spread to other parts of your body and could cause serious complications.