Sinusitis is inflammation or inflammation of the sinus wall. Sinus is a small cavity filled with air that lies behind the cheekbones and forehead. Sinusitis is a common disease that can infect people of all ages. Some types of sinusitis based on the length of the course of the disease, among others: Acute sinusitis. Subacute Sinusitis. Chronic Sinusitis. Recurrent Sinusitis. In general, symptoms of sinusitis are: Headache Fever with a temperature of 38 ° Celsius or more Nasal congestion or greenish yellow discharge Pain in the face and pain when pressed Loss of the sense of smell Smelling breath (halitosis)