Treatment may depend on the cause. A sinus infection, also known as sinusitis or rhinosinusitis, occurs when your nasal cavities become swollen and inflamed. Fluid buildup in the sinuses can allow ...

"The toxic VOCs, the volatile organic compounds, that's where they're getting caught," he said, as he showed on a model where the sinus cavities are located. Sifting through the charred remains of ...

the pair of sinus cavities located behind the cheekbone. "When these sinuses become inflamed by colds or flu, pressure builds ...