Sinus Infection (Sinusitis): Symptoms, Causes, Duration, and
https://www.webmd.com/allergies/sinusitis-and-sinus-infection
WEBNov 5, 2023 · Sinusitis, also known as a sinus infection, can cause symptoms such as facial pain, congestion, and headache. Learn about the causes, duration, and treatment options for sinusitis...
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