A sinus infection, also known as sinusitis, happens whenever the nasal cavities are inflamed or swollen. A virus typically causes it, and it seems to linger on usually after the other upper respiratory conditions have long gone. Bacteria can also cause sinus infections, but these cases are rather rare. Other causes can include allergies, tooth infections, nasal polyps and a deviated septum. There are two types of sinus infections: acute and chronic. Acute infections are short-lived and are typically caused by allergies or the common cold. Chronic infections can last for about two months and often reoccur.
Pain is one of the very first symptoms that you may experience when you have a sinus infection, and it is also the most obvious to notice. There are many different sinuses located around your nose and even around your eyes, and they can all cause pain, ranging from a dull ache to a sharpness that is often difficult to bear. When inflammation and swelling take hold, the pressure can also cause a different type of pain to radiate, often producing a pounding effect. You can also experience pain in the forehead, jaws, and teeth.
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