06/08/2026
👃 Could narrowing at the nose affect the airway further down?
The upper airway functions as one connected system—from the nostrils and nasal valve to the soft palate, tongue base and throat.
The nasal valve is one of the narrowest regions of the nasal airway. If its side wall draws inward during inhalation, airflow resistance can increase considerably.
This may result in:
• increased breathing effort
• a sensation of nasal blockage
• nasal flaring or visible nostril collapse
• mouth breathing
• snoring or disrupted sleep
• difficulty tolerating exercise or deeper breathing
When air has to move through a restricted nasal passage, stronger negative pressure may be generated during inhalation.
Further down, the pharynx is a soft, muscular and potentially collapsible tube. During sleep, the muscles that help hold it open naturally reduce their activity.
For someone who is already anatomically or neuromuscularly vulnerable, increased resistance upstream may contribute to narrowing around the soft palate, lateral throat walls or tongue base.
Nasal obstruction may also encourage mouth opening. This can alter jaw and tongue position and, in some people, increase the collapsibility of the pharyngeal airway.
However, nasal valve collapse does not automatically mean that someone has sleep apnoea.
Sleep-disordered breathing is multifactorial and may involve:
• nasal resistance
• enlarged tonsils or adenoids
• soft-palate or tongue-base collapse
• jaw and craniofacial structure
• sleep position
• reduced airway muscle responsiveness
• weight, hormones and other health factors
At Smile Tone, we observe nasal airflow, breathing effort, mouth posture, tongue function and signs that further airway assessment may be appropriate.
Depending on the findings, patients may be directed to an ENT, sleep physician, dentist, orthodontist or other relevant healthcare professional.
Because improving breathing starts with understanding where the resistance is occurring—and why.