Thick yellow or green nasal discharge
Nasal congestion that lasts more than 10 days
Facial pain or pressure, especially around the cheeks, forehead, or eyes
Pain that gets worse when bending forward
Reduced sense of smell
Postnasal drip
Cough, especially worse at night
Headache
Fever
Bad breath
Upper tooth pain
Ear pressure or fullness
Symptoms that improve and then get worse again
Swelling around the eyes
Severe symptoms or symptoms lasting more than 12 weeks