Why can't I breathe through my nose?

Nasal obstruction has many causes.  Anatomical problems such as a deviated septum or enlargement of the turbinate bones in the nose can significantly obstruct airflow.  Allergies, chronic sinus infections, and a variety of other medical conditions can also cause chronic nasal congestion.  Nasal obstruction can lead to headaches, facial pressure, and can adversely affect quality of life.  Only a comprehensive exam by a medical specialist can determine the exact causes of this problem.  Treatment options include medical and surgical therapies.