When you have a fever, your body temperature rises, and you naturally lose more fluids. This often causes dry mouth and a burning sensation.

Drinking water and reducing fever with medication or rest can help relieve these symptoms.

8. Hyperthyroidism
An overactive thyroid speeds up the body’s metabolism, increasing the need for fluids and overstimulating the nervous system.

This can result in excessive dryness in the mouth during the night.

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If you regularly experience dry mouth at night, consider evaluating your diet, hydration habits, and oral hygiene. If the issue persists, it’s best to consult a doctor to rule out any serious medical conditions.