Rhinitis and sinusitis are not the same thing, rhinitis is a broad name, while sinusitis is a narrow name, the broad sense is to say rhinitis, including sinusitis, while sinusitis does not include the entire rhinitis, so the range of inflammation of sinusitis is generally a little broader than the range of inflammation of rhinitis. Sinusitis is caused by chronic rhinitis of the nose, frontal sinuses, and sieve sinuses, over a long period of time. Because sinusitis is also related to bacterial and viral infections, it is a long-term accumulation of fluid in the nasal cavity and sinuses that causes the symptoms of rhinitis, so chronic rhinitis is an early stage of sinusitis.