That increased pressure can throw off your balance system in three main ways: Your inner ear houses the vestibular system —the body’s built-in gyroscope. The Eustachian tubes connect your middle ear to the back of your throat and nasal passages.
Let’s break down the science behind sinus-related lightheadedness, when to worry, and how to find relief. Your sinuses are air-filled cavities located in your forehead (frontal), between your eyes (ethmoid), behind your cheekbones (maxillary), and behind your nose (sphenoid). When they become infected or inflamed, they fill with fluid instead of air.
If you’ve ever wondered whether your sinus infection (sinusitis) is making you dizzy or lightheaded, you’re not imagining things. The short answer is —but the connection might not be what you think.