Sinusitis 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

Classification: -Acute sinusitis is usually precipitated by an earlier upper respiratory tract infection, generally of viral and Hemophillus influenza was the most common bacterial agent to cause sinus infection. pain is typically localized to the involved sinus and may worsen when the affected person bends over or when lying down.

-Chronic sinusitis, by definition, multifactorial inflammatory disorder is lasts longer than three months. Symptoms of chronic sinusitis may include any combination of the following: nasal congestion, facial pain, headache, asthma symptoms, general malaise, thick green or yellow discharge, feeling of facial ‘fullness’ or ‘tightness’ that may worsen when bending over, dizziness, aching teeth, and/or halitosis.[

Predisposing: Factors which may predispose someone to developing sinusitis include:allergies ; structural abnormalities, such as a deviate septum, small sinus ostia, nasal polyp, smoking etc

Management: nasal irrigation, antibiotic, corticosteroid and surgery.