Sleep with your head elevated on an extra pillow. Lying flat can cause mucus to pool in your sinuses, increasing pressure on your ears.
Here is a useful text explaining why this happens, how to tell it apart from other types of dizziness, and what you can do about it. can sinus infection make you dizzy
The primary cause of dizziness during a sinus infection is . Your sinuses are air-filled cavities located behind your forehead, cheeks, and eyes. When these become inflamed and filled with mucus, the pressure can spread to several nearby systems: Sleep with your head elevated on an extra pillow