At Allergy, Asthma & Sinus Center, our dedicated staff works to help our patients feel better fast! We provide diagnosis and treatment of your sinus problems in Sterling, Leesburg, and Purcellville. Our treatments work in a variety of effective ways that help you get back on track with your busy lifestyle without uncomfortable sinus pain and pressure. Sinuses are normally pairs of empty cavities that are connected to one another. Sinuses can collect mucus and fluid. Most of the sinuses drain into the nose. If the nose becomes inflamed due to allergies, chronic irritants, or infection, it can cause blockage [...]