Symptoms may last for 3 months or more.
The health care provider will examine you and tap lightly on your face over your sinuses. This method is called percussion. It may reveal tenderness in the area.
Normal sinuses glow when light shines directly onto them. (See also: Transillumination). If sinusitis is present, the sinuses will not glow when your doctor shines a light onto them.
Other tests that may be done include:
These imaging tests may show the sinuses to be filled with fluid or reveal thickening of sinus tissues.