Sinus Infection (Sinusitis): What It Is, Common Symptoms and Early Signs

16. Acute sinusitis that does not resolve

First of all, chronic sinusitis can be detected as acute sinusitis that does not fully resolve. The symptoms still linger for a while until a new episode comes through. The minimum of 8 weeks without symptoms is not met, and patients experience mild manifestations of the disease and may even get used to them.