Chronic Sinusitis with Allergic Component is a long-term inflammation of the sinuses associated with allergies and persistent immune-related irritation of the nasal passages. It commonly occurs due to environmental allergens such as dust mites, pollen, mold, pet dander, or pollution, leading to ongoing swelling and blockage of the sinus cavities. Patients may experience nasal congestion, facial pressure, headaches, thick nasal discharge, reduced sense of smell, postnasal drip, coughing, and recurrent sinus infections. Persistent symptoms can significantly affect breathing, sleep quality, and daily activities if not properly managed.