Viral respiratory infections, as well as allergies and air pollutants such as tobacco smoke, cause swelling in the upper respiratory membranes. The resultant inflammation and surplus mucus block the small openings that connect the normally air-filled sinuses with the nasal cavities. The mucus normally produced by the cells lining the sinuses begins to mount up, generating a sense of pressure. If bacteria have become trapped within the sinuses, they start to proliferate, leading to symptoms of acute bacterial sinusitis. In most cases, respiratory viruses cause sinusitis. Symptoms include mild fatigue, pressure, and uneasiness in the affected sinus. (There are four pairs of sinuses in your face.) With a cold, nasal mucus usually changes from clear and watery to yellowish and thick. It's simple to tell when the infection has become bacterial. Cold symptoms, including sinus congestion, should resolve within ten days. If the infection remains, that’s an indication of bacterial infection or other problems. Also, symptoms are usually more severe, including sinus pain (usually worsened by leaning down), fatigue, fever, bad breath, and green or brownish nasal discharge. Postnasal drip can irritate the throat and lead to nighttime cough. Another pattern is reappearance of symptoms after they seemed to have alleviated. Otherwise, acute sinusitis can be easily resolved without treatment. Simple home remedies can help alleviate symptoms.
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