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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.
When the maxillary sinus is involved, the inferior oblique muscle may be damaged. [1] The cause of silent sinus syndrome is not well understood. Bacteria in the maxillary sinus may be involved. The connection to the nose may be blocked. [1] [2] This can create negative pressure in the sinus, as secretions are reabsorbed. [1]
Sinusitis, also known as rhinosinusitis, is an inflammation of the mucous membranes that line the sinuses resulting in symptoms that may include production of thick nasal mucus, nasal congestion, facial congestion, facial pain, facial pressure, loss of smell, or fever.
Management of cranial venous outflow obstruction involves treating the underlying cause, if identifiable, and managing the symptoms. This can include medication to reduce intracranial pressure, anticoagulation therapy to prevent thrombosis, and in some cases, surgical intervention to restore normal venous drainage. [6] [11]
Looking for relief from painful sinus pressure this spring allergy season? Board certified allergist Dr. Tania Elliott has top tips for keeping your allergies and nasal symptoms under control.
In addition, patulous Eustachian tube generally feels dry with no clogged feeling or sinus pressure. Patients hear their own voice or its echo from inside. [3] [4] They describe it as being amplified and unpleasant. Lying head down may help since it increases venous blood pressure and congestion of the mucosa.