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Rhinosinusitis is inflammation or infection of the sinus cavities. Acute rhinosinusitis has symptoms lasting less than four weeks, while chronic rhinosinusitis lasts greater than 12 weeks. [ 8 ] This persistent irritation can lead to increased mucus production as a result of pro-inflammatory pathways, producing symptoms of PND.
The sinus will fill with fluid or blood unless the pressure differential is neutralized. [6] If the outlet is blocked during ascent, the situation is reversed and "reverse squeeze" appears. [7] Pressure inside the sinus increases, affecting the walls of the sinus and producing pain or epistaxis.
The diagnosis of sinusitis is based on the symptoms and their duration along with signs of disease identified by endoscopic and/or radiologic criteria. [11] Sinusitis is classified into acute sinusitis and chronic sinusitis. In acute sinusitis, symptoms last for less than 4 weeks. In chronic sinusitis symptoms must be present for at least 12 ...
If the sinus passage remains blocked, there is a chance that sinusitis may result. [6] If the mucus backs up through the Eustachian tube , it may result in ear pain or an ear infection . Excess mucus accumulating in the throat or back of the nose may cause a post-nasal drip , resulting in a sore throat or coughing. [ 6 ]
Nasal obstruction characterized by insufficient airflow through the nose can be a subjective sensation or the result of objective pathology. [10] It is difficult to quantify by subjective complaints or clinical examinations alone, hence both clinicians and researchers depend both on concurrent subjective assessment and on objective measurement of the nasal airway.
Silent sinus syndrome is a subtype of stage three chronic maxillary atelectasis. The distinguishing factor is that in silent sinus syndrome, there is an absence of sinusitis symptoms. [3] [4] [5] To be clear, chronic maxillary sinusitis may be a primary causitive factor in a significant number of silent sinus syndrome cases, it just may be ...
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