Sinusitis: Causes
Pathogenesis (development of disease) Acute sinusitis usually develops due to obstruction of the ostia by mucosal swelling, usually referred from the nasal cavity. In rarer cases, sinusitis is caused odontogenically (“originating from the teeth”). The most common causative agents of sinusitis are viruses such as rhinoviruses or (para)influenza viruses, or bacteria such as Streptococcus pneumoniae, … Sinusitis: Causes