Overview Acute sinusitis causes the spaces inside the nose, known as sinuses, to become inflamed and swollen. Acute sinusitis makes it hard for the sinuses to drain. Mucus builds up. Acute sinusitis can make it hard to breathe through the nose. The area around the eyes and the face might feel swollen. There might be throbbing face pain or a headache. Sinusitis can cause facial pain, swelling and congestion. Learn the causes and how to treat it. A sinus is a sac or cavity in any organ or tissue, or an abnormal cavity or passage. In common usage, "sinus" usually refers to the paranasal sinuses, which are air cavities in the cranial bones, especially those near the nose and connecting to it. Most individuals have four paired cavities located in the cranial bone or skull. Learn what sinuses are, their causes, symptoms, and treatment options. Expert ENT doctors at Magrabi Hospitals explain how to breathe freely again. Sinus infections, or sinusitis, occur when a virus of bacteria enters the sinuses. Read on for a list of common symptoms and treatments. For related background details, please refer to our report on c3 corvette vacuum diagram. Sinus pain and discomfort typically starts when your sinuses become irritated and inflamed, causing swelling that can narrow or close off the openings. This makes it hard for mucus to drain out of your sinus cavities. Mucus and air pressure build, causing a feeling of stuffiness and congestion. Sinusitis, also known as rhinosinusitis and commonly known as a sinus infection, is an inflammation of the mucous membranes that line the sinuses resulting in symptoms that may include production of thick nasal mucus, nasal congestion, facial congestion, facial pain, facial pressure, loss of smell, or fever. [6][2] Sinusitis is a condition that affects both children and adults. It is caused by ...

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