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Thrush

Thrush is a yeast infection that causes white patches in the mouth and on the tongue. The patches look like cottage cheese. In a baby, thrush may also cause diaper rash.

Your doctor can prescribe medicine that will clear it up.

Current as of: May 1, 2026

Author: WebMD Ignite Staff

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All WebMD Ignite education is reviewed by a team that includes physicians, nurses, advanced practitioners, registered dieticians, and other healthcare professionals.

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This content has been reviewed by the oncology specialists with New Jersey Cancer Care, PA.