Mostly sinusitis is caused by infection (such as a cold or an upper respiratory tract infection). This infection from the nose can travel to the sinuses through the narrow passages that drain mucus from the sinuses into the nose.
Excessive dryness of air in homes and offices from dry-air heating and air-conditioning systems can also inflame the sinuses.
Allergies to dust, pollen, pet dander; indoor air pollutants such as cigarette smoke, smell of chemicals and outdoor air pollutants all can induce inflammation.
Symptoms of acute (short lasting) sinusitis are:
Pus-like (purulent) nasal discharge
Loss of sense of smell
Facial pain or headache that is sometimes aggravated by bending over
Maxillary sinusitis (the most common type) manifests as cheek or dental pain.
Forehead pain indicates frontal sinusitis.
Pain at the bridge of the nose or behind the eye suggests ethmoid sinusitis.
Pain referred to the top of the head indicates sphenoidal involvement.
Diagnosis of Sinusitis:
means diabetes mellitus (high blood sugar) first found during pregnancy. The hormones of pregnancy or a shortage of insulin causes gestational diabetes.
Gestational diabetes is managed by insulin, diet and exercise and goes away after the baby is born.
Symptoms of chronic (long lasting) sinusitis are:
Facial fullness / congestion
Headache that occurs daily for weeks at a time, and is often notably worse in the morning and with head movement
Nasal obstruction / blockage
Nasal discharge with discolored postnasal drainage