Sinusitis
Sinusitis is an inflammation or swelling of the tissue lining your sinuses. Your sinuses are hollow, air-filled spaces located in your skull behind your forehead, cheekbones, and between your eyes. When these tissues become inflamed, they can swell, blocking the sinus openings and causing mucus to build up. This leads to pressure, pain, and congestion. Sinusitis is a very common condition that can be acute (short-term, often following a cold) or chronic (long-term, lasting 12 weeks or more).
Common Symptoms
- Nasal congestion or stuffiness
- Facial pain or pressure (especially around the eyes, cheeks, or forehead)
- Thick, discolored discharge from the nose or down the back of the throat (postnasal drip)
- Reduced sense of smell or taste
- Headache or toothache
Clinical Sources
- Sinus Infection (Sinusitis): Causes, Symptoms & TreatmentCleveland Clinic
- Acute Sinusitis: Symptoms, Causes & TreatmentCleveland Clinic
Diagnostic Lab Tests
Tests commonly used to diagnose or monitor Sinusitis:
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