Chronic sinusitis - Symptoms and causes - Mayo Clinic
https://www.mayoclinic.org/diseases-conditions/chronic-sinusitis/symptoms-causes/syc-20351661
Jul 16, 2021 · Uncommonly, people with chronic sinusitis may develop inflammation of the membranes and fluid surrounding the brain and spinal cord (meningitis), an infection in the bones, or a serious skin infection. Prevention. Take these steps to reduce your risk of getting chronic sinusitis: Avoid upper respiratory infections.
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