Nasal valve collapse

Nasal valve collapse is a structural condition characterized by narrowing or loss of integrity in the nasal valve area, which is the narrowest region of the nasal airway. This narrowing leads to impaired airflow and chronic nasal obstruction.^[1]

External nasal valve collapse

External nasal valve collapse is a structural disorder involving insufficient support of the lateral nasal wall (the ala of the nose), resulting in narrowing or collapse of the nasal airway during inspiration.^[2] It is a subset of nasal valve collapse.