If the person is affected by sinusitis, then the lining in the sinuses will get inflamed and swell. Sinuses are actually filled with air under normal conditions but when fluid gets deposited in sinuses, and then bacteria will grow and produce infection. Allergic rhinitis, common cold is some of the infections that are the cause blockage of sinuses. Sinusitis is of different types:

People whose nasal mucous membrane is swelling or those suffering from nasal blockage are common suffers of sinusitis. Fever, fatigue, pain of facial muscles, continuous discharge from the nasal cavity, and bad odor in breath are some symptoms of sinusitis. Fungi are also found to be one cause for chronic sinusitis.