Sinusitis Causes

Sinusitis Causes - Sinusitis Causes Most cases of acute...

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Sinusitis Causes Most cases of acute sinusitis follow viral upper respiratory tract infections. Often these viruses only cause an inflammation of the sinus lining which resolves within a week or two. However, in some cases the inflammatory mucus cannot drain out of the sinuses, providing an ideal growth medium for secondary bacterial infections. Bacteria which are found in the nasal passages (usually S treptococcus pneumoniae or Haemophilus influenza) , begin to multiply within the stagnant mucus. The bacterial release endotoxins which leads to further mucosal inflammation and increased mucus secretion. Eventually the pressure builds up and it is a combination of inflammation and increased pressure which causes the symptoms of sinusitis. Chronic sinusitis is more often due to a combination of allergy and infection. Patients with asthma or hay fever more often get chronic sinusitis. In these cases, the mucosal lining of the sinuses become inflamed and swollen in response to an allergen or irritant. Epidemiology
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Sinusitis Causes - Sinusitis Causes Most cases of acute...

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