Sinus Infections
A sinus infection (sinusitis) occurs when the tissues lining the sinuses become inflamed. Sinusitis frequently develops following a cold, viral respiratory infection, or allergy-related nasal inflammation.
Symptoms may include:
Facial pressure or pain
Nasal congestion
Thick nasal drainage
Postnasal drainage
Headache
Cough
Reduced sense of smell
Pressure around the eyes, nose, or forehead