Having a blockage in your nose
A blockage can occur from allergies, a common cold, or a sinus infection. It can also
happen after an injury that changes the shape of your nose or nasal passages. Allergies
can cause enlargement of your adenoids (tonsil-like tissue at the back of your nose,
where the nose joins the upper throat). Enlarged adenoids can cause snoring by
blocking your airway and vibrating while you breathe.