This document discusses sinus and allergies (pratisyaya and peenasam) in Ayurveda. It defines allergies as an individual's sensitivity to usually harmless substances called allergens or antigens. Allergic rhinitis is the inflammation of the nasal passages caused by an allergic reaction to airborne substances, with symptoms like sneezing, nasal discharge, itchy eyes, and nasal congestion. When allergic rhinitis is neglected, it can lead to sinusitis (pratisyaya). Sinusitis is the inflammation of the sinus cavities between the nasal bones. Causes include exposure to dust/smoke, temperature extremes, improper diet and bowel/bladder habits. Treatment involves