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Normally, the sinuses drain into the nasal cavity through small ostia, which permit mucociliary clearance and ventilation that equilibrates pressure. However, when the opening is obstructed due to inflammation, polyps, mucosal thickening, anatomical abnormalities, or other lesions, pressure equilibration is impossible.
Post-nasal drip (PND), also known as upper airway cough syndrome (UACS), occurs when excessive mucus is produced by the nasal mucosa.The excess mucus accumulates in the back of the nose, and eventually in the throat once it drips down the back of the throat.
If you feel pain and pressure in your sinuses, that's not necessarily because there's anything wrong with them. In fact, your pain may be a sign of an entirely different condition : migraine.
The ethmoidal sinuses are further subdivided into anterior and posterior ethmoid sinuses, the division of which is defined as the basal lamella of the middle nasal concha. In addition to the severity of disease , discussed below, sinusitis can be classified by the sinus cavity it affects:
The, paranasal sinuses are joined to the nasal cavity via small orifices called ostia. These become blocked easily by allergic inflammation, or by swelling in the nasal lining that occurs with a cold. If this happens, normal drainage of mucus within the sinuses is disrupted, and sinusitis may occur. Because the maxillary posterior teeth are ...
Nobody likes being sick. The sneezing, coughing and runny nose are enough to drive anyone crazy. But having a blocked nose, whether it's from an illness or just plain ol' seasonal allergies is ...
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