Acute sinusitis (acute rhinosinusitis) causes the cavities around your nasal passages (sinuses) to become inflamed and swollen. This interferes with drainage and causes mucus to build up.

With acute sinusitis, it might be difficult to breathe through your nose. The area around your eyes and face might feel swollen, and you might have throbbing facial pain or a headache.

Acute sinusitis is mostly caused by the common cold. Unless a bacterial infection develops, most cases resolve within a week to 10 days.

In most cases, home remedies are all that's needed to treat acute sinusitis. However, persistent sinusitis can lead to serious infections and other complications. Sinusitis that lasts more than 12 weeks despite medical treatment is called chronic sinusitis.