Adenoid hypertrophy can cause a runny nose, which is a very common symptom of adenoid hypertrophy. Since the adenoids are located at the back of the nasal cavity, specifically in the nasopharynx, the mucus secreted by the nasal cavity normally flows backward, precisely to the back of the nasal cavity, passing over the adenoids. When the adenoids are enlarged, they block the drainage pathway of the mucus, causing most of it to flow out from the front of the nasal cavity. Therefore, adenoid hypertrophy can lead to a runny nose, which is one of its symptoms, and can also cause related symptoms of rhinitis such as nasal congestion. After nasal congestion, it may lead to various other manifestations, including snoring.