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My tongue has a white discoloration, especially at the back. Is it a fungus?

It is possible that a white coating on the tongue could be caused by factors such as diet and hydration levels. However, if the issue persists for 3 to 5 days or worsens, it is recommended to seek advice from a pharmacist or healthcare professional. They may suggest a cream to apply to the tongue if a fungal infection is suspected. If the problem does not improve after 7 days, it is important to consult a doctor for proper treatment.