Sinusitis; chronic
Alternative names:
chronic sinus infection; chronic sinusitis
Symptoms:
Symptoms may persist for 3 months or more.
Signs and tests:
Percussion over a sinus shows tenderness. Transillumination (examination by shining a light against the sinus) may indicate sinusitis.
A CBC shows chronic infection. A culture of drainage from the sinuses may show bacteria, a virus, or fungus. Sinus or head X-rays, cranial CT scan, or cranial MRI show sinusitis or thickening of the membranes of the sinus.
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