Sinusitis or rhinosinusitis is inflammation of the paranasal sinuses. It can be due to infection, allergy, or autoimmune issues.
Most cases are due to a viral infection and resolve over the course of 10 days. It is a common condition. There are two types, acute and chronic. Acute sinusitis is very common. Roughly ninety percent of adults have had sinusitis at some point in their life. Headache/facial pain or pressure of a dull, constant, or aching sort over the affected sinuses is common with both acute and chronic stages of sinusitis. Treatment can be conservative or by Endoscopic Sinus surgery.