Sneezing or sternutation is a sudden & forceful expulsion of air through the nose and mouth . Learn about its causes, symptoms, treatments, and more. You may be able to delay a sneeze long enough to grab a tissue, but stopping it altogether is tricky. Learn how to stop sneezing . Discover the causes of sneezing , effective treatments, and prevention tips. Learn how to manage allergies, infections, and environmental triggers for lasting relief. Persistent rhinitis typically causes sneezing and a blocked, itchy and runny nose. An allergy is a common cause but there are also non-allergic causes. Treatment options include avoiding things that cause an allergy, an antihistamine nasal spray, antihistamine tablets and a steroid nasal spray. Other treatments are sometimes used.