title: [Advantages of the L-menthol test in assessing chronic nasal obstruction].
abstract: OBJECTIVE
  In normal and anosmic patients, l-menthol inhalation is responsible for the subjective sensation of increased nasal permeability, related to a stimulation of the internal nasal nerve (branch of trigeminal nerve) endings connected with cold pressor receptors. At present, routine assessment of nasal obstruction does not include the l-menthol test. The aim of this case report was to show the advantages of this test in chronic nasal obstruction evaluation.
  
  
  METHODS
  The example of a patient with a medical history of facial trauma and anosmia for sequela is reported. This patient complained of chronic nasal obstruction that persisted despite several septorhinoplasties and that conflicted with clinical examination and rhinomanometry data.
  
  
  RESULTS
  An l-menthol test did not induce any mint smell recognition, any improvement of nasal permeability sensation, or any freshness sensation.
  
  
  CONCLUSIONS
  The authors suggest that the nasal obstruction sensation could result, in this case, from post-trauma anesthesia of the trigeminal nerve, particularly its internal nasal nerve branch. The l-menthol test could be a predictive test that may prevent recurrent functional failures of surgical treatment proposed for nasal obstruction.
authors.affiliation: Service ORL et chirurgie cervicofaciale, hôpital Central, CHU de Nancy, 29, avenue du Maréchal-de-Lattre-de-Tassigny, and INSERM ERI 11, faculté de médecine, université de Nancy, 54035 Nancy cedex, France. r.jankowski@chu-nancy.fr
authors.forename: R
authors.initials: R
authors.lastname: Jankowski
authors.forename: D
authors.initials: D
authors.lastname: Ebbo
authors.forename: C
authors.initials: C
authors.lastname: Parietti-Winkler
mesh_terms: D000328:Adult; D006801:Humans; D008297:Male; D008610:Menthol; D015508:Nasal Obstruction / Q000175:diagnosis* / Q000453:epidemiology / Q000209:etiology
chemical_list: D008610:Menthol