Sinusitis can be acute a one-time infection related to a cold or the flu or it can become chronic, with persisting symptoms. Patients with acute sinusitis frequently complain of facial pain, nasal obstruction and discolored nasal discharge. However, the symptoms of chronic sinusitis may be more subtle, often consisting primarily of post-nasal drip, cough, and lethargy.
Many patients with chronic sinusitis also suffer from polyps which are benign growths within the nasal passage. Polyps can be difficult to treat successfully, and often recur unless adequate therapy is started.
Sinusitis is sometimes associated with other medical conditions. Bronchial asthma is frequently worsened by sinusitis. Persons with chronic sinusitis may also develop problems with recurrent bronchitis.
Although very unusual, untreated sinusitis may also result in serious problems such as brain abscesses, meningitis, mucoceles (mucus cysts), or even vision impairment.