When the nasal passage is obstructed or inflamed, it can lead to a range of symptoms. The loss of proper nasal function can cause a person to breathe through their mouth, which can exacerbate sleep-related problems, dry out the oral cavity and increase the risk of oral infections. Chronic nasal breathing difficulties may be the result of underlying conditions, such as allergies, nasal polyps or a deviated septum, and can significantly impact a person’s quality of life. An evaluation can help identify the underlying cause of the issue and determine the most effective treatment to restore proper nasal function.