(HealthDay News) -- Sinusitis refers to inflamed sinuses normally caused by a bacterial, fungal or viral infection, the U.S. National Library of Medicine says.
The agency says these common warning signs may indicate sinusitis:
- Cold symptoms that persist for more than five to seven days.
- Inability to smell, drainage into the back of the throat, or a sore throat.
- Headache and pressure or tenderness in the face -- surrounding the eyes and sometimes affecting the teeth.
- Nasal congestion, bad breath or runny nose.
- Coughing, particularly at night.
- Fever, fatigue and general feeling of illness.
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