What Causes Sinus Infections? - Sound Reasons For Sinus Outbreak

Inflammation of the sinuses is known as sinusitis. This is usually caused by an infection viral, bacterial, or fungal. The sinuses are air-filled cavities around the forehead, cheeks, and eyes that are lined with mucous membranes. Healthy sinuses are germ-free and open, allowing mucus to drain and air to circulate in the nasal passages. When inflamed, the sinuses become blocked with mucus and can become infected.

A sinus infection can cause a headache or pressure in the eyes, nose, cheek area, or on one side of the head. A person with a sinus infection can have cough, fever, bad breath, and nasal congestion with thick nasal discharges. Sinusitis is classified as acute or chronic. Acute sinus lasts for less than 8 weeks and chronic one can last for more than 8 weeks.

A viral infection in the upper respiratory tract leads to an acute sinus infection. An acute sinus infection can also be caused by allergens and pollutants in the air. When a person has a viral sinus infection then cells of the sinus lining are damaged. This in turn leads to inflammation and swelling and prevents the proper discharge of nasal mucus. This in turn becomes a play ground for organisms like bacteria, viruses, and fungus to live and grow quickly.

Other causes of sinus includes allergies like dry air, tobacco smoke, hay fever, change in weather temperature or atmospheric pressure like when swimming or climbing high altitudes. Sinus can also be due to dental infection, physical injury to sinus, Disease or an abnormal structure in the sinus area such as nasal polyps, deviated septum, or nasal bone spur. Many bacteria also cause acute sinusitis like Streptococcus pneumoniae, Haemophilus influenzae, and Moraxella catarrhalis.

If recurrent cases sinusitis is not treated properly it can cause chronic sinusitis. Acute sinus causing bacteria along with Staphylococcus aureus and anaerobes causes chronic sinus. Fungi have become a rising cause of chronic sinusitis, especially in people with diseases like AIDS, leukemia, and diabetes, where the immune system is very weak.

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