Nasal clogging, nasal congestion, and/or nasal obstruction is a very common complaint patients have when presenting to a ENT office. This video goes over the top 7 causes of nasal clogging. 1: Allergies 2: Deviated Septum 3: Large Inferior Turbinates 4: Large Adenoids 5: Nasal Polyps 6: Narrow Nose 7: Decongestant Nasal Spray Abuse