This is the infection of the sinuses. The predisposing cause is a common cold, which has affected the sinuses.
Often one would require antibiotics. Failure to eradicate sinusitis will lead to a chronic condition in which surgery may be necessary. Individuals with allergies will tend to have more persistent symptoms.
Again accurate diagnosis is the key.
To get an accurate assessment of the Sinusitis or ENT problems you are suffereing from, consult the Singapore ENT Specialist Dr. YT Pang at the Centre for Ear Nose Throat Allergy & Snoring (CENTAS).