What is Acute Sinusitis? What Causes Acute Sinusitis?
Acute sinusitis is defined as the rapid onset and persistence of sinus symptoms, usually resulting from an infection of upper respiratory tract. Sinus infections result in obstruction of the ostia of the frontal, maxillary and anterior ethmoid sinuses, or the osteomeatal complex which is situated in the middle meatus lateral to the middle turbinate. Blockage of the ostia and the osteomeatal complex results in impaired sinus drainage, accumulation of mucosal secretions, promotes growth of bacteria, resulting in sinus infection or sinusitis. Rapid onset of sinus infection (sinusits) is classified as acute sinusitis.
