Here is the key: Your inner ear, which is the body’s gyroscope for balance, sits very close to the Eustachian tubes (which drain fluid from the middle ear).
The short answer is While a stuffy nose is the hallmark symptom, dizziness is a surprisingly common—and frustrating—side effect of a sinus infection. Here is why it happens, what it feels like, and when you need to call a doctor. Why a Sinus Infection Affects Your Balance To understand the dizziness, you have to look at the anatomy of your head. Your sinuses are air-filled cavities located in your forehead (frontal), between your eyes (ethmoid), and behind your cheekbones (maxillary).
Most of the time, treating the congestion with hydration, steam, and nasal rinses will resolve the dizziness within a few days. However, if the room is spinning violently or you have a persistent high fever, it’s time to visit your primary care provider or an ENT (Ear, Nose, and Throat specialist) to rule out a bacterial infection that may require antibiotics.