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Related Experiment Videos

Fluctuating olfactory sensitivity and distorted odor perception in allergic rhinitis.

A J Apter1, J F Gent, M E Frank

  • 1Department of Medicine, Connecticut Chemosensory Clinical Research Center, University of Connecticut Health Center, Farmington, USA.

Archives of Otolaryngology--Head & Neck Surgery
|September 17, 1999
PubMed
Summary

Allergic rhinitis patients experience worsening smell loss with increased nasal disease severity. This condition risks olfactory epithelium damage due to frequent respiratory infections.

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Area of Science:

  • Otolaryngology
  • Allergy and Immunology
  • Neuroscience

Background:

  • Allergic rhinitis (AR) is a common condition affecting the upper airways.
  • Olfactory dysfunction, including smell loss and distortions, can significantly impact quality of life.
  • The relationship between AR severity, nasal disease, and olfactory function requires further characterization.

Purpose of the Study:

  • To investigate the correlation between allergic rhinitis, nasal disease severity and duration, and olfactory function.
  • To assess self-reported olfactory symptoms, including odor perception changes, in AR patients.
  • To determine the impact of nasal-sinus disease on olfactory loss and distortions.

Main Methods:

  • A study involving 90 patients with allergic rhinitis.

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  • Patients were assessed using subjective olfactory symptom questionnaires and objective olfactory function tests.
  • Participants were grouped based on their nasal-sinus disease status, including chronic rhinosinusitis and nasal polyps.

    • Main Results:

    • Olfactory function (hyposmia/anosmia) was significantly impaired in allergic rhinitis patients, worsening with increased nasal-sinus disease severity.
    • Olfactory scores were lower than expected, even accounting for age-related decline.
    • Longer duration of olfactory loss correlated with greater nasal-sinus disease severity; patients without polyps reported more distortions and infections.

    Conclusions:

    • A continuum exists between allergic rhinitis, nasal-sinus disease severity, and the duration/severity of olfactory loss.
    • Allergic rhinitis patients are susceptible to olfactory epithelium damage due to recurrent respiratory infections.
    • Understanding this relationship is crucial for managing olfactory dysfunction in AR.