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Winter pollinosis in Paris

J Laurent1, L Decoux, M R Ickovic

  • 1Service de Pneumologie, Allergologie et Oncologie, Hôpital Saint-Joseph, Paris, France.

Allergy
|October 1, 1994
PubMed
Summary
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Winter pollinosis, caused by alder and hazel pollen, frequently triggers respiratory symptoms like asthma and rhinitis. Skin tests and radioallergosorbent tests (RAST) show lower accuracy than specific endonasal tests for diagnosing winter pollen allergies.

Area of Science:

  • Allergy and Immunology
  • Environmental Health
  • Respiratory Medicine

Background:

  • Winter respiratory symptoms, including infectious coryza and asthma, are common.
  • Environmental antigens are known triggers for some respiratory conditions.
  • Pollen may interact with viral infections, exacerbating winter respiratory issues.

Purpose of the Study:

  • To investigate the prevalence and diagnosis of winter pollinosis in patients with aggravated asthma or rhinitis.
  • To evaluate the effectiveness of skin tests, radioallergosorbent tests (RAST), and endonasal challenge tests in diagnosing winter pollinosis.

Main Methods:

  • 130 consecutive patients with winter asthma or rhinitis aggravation were tested.
  • Diagnostic methods included skin tests, RAST, and specific endonasal challenge tests.

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  • Pollen types identified were alder and hazel.

    • Main Results:

    • 35 patients reacted to skin tests, 24 to RAST, and 21 to endonasal tests.
    • A definitive diagnosis of winter pollinosis was established in 20 patients.
    • Alder pollen caused symptoms in 10 patients, and hazel pollen in 12 patients.
    • Specific endonasal tests showed a higher positive predictive value (0.86) than skin tests (0.57).

    Conclusions:

    • Hazel and alder pollens are significant causes of winter respiratory symptoms in Paris.
    • Specific endonasal testing is more reliable for diagnosing winter pollinosis.
    • Consider alder and hazel pollen testing for winter respiratory symptoms, regardless of prior allergy history.