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[Aeroallergens causing rhinoconjunctivitis].

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A study in Temuco, Chile, found that 62.4% of adults with allergic rhinoconjunctivitis (ARC) were sensitized to at least one aeroallergen. Key culprits include dust mites and various pollens, highlighting the need for targeted skin testing for accurate ARC diagnosis and treatment.

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Area of Science:

  • Allergology
  • Immunology
  • Environmental Health

Background:

  • Allergic rhinoconjunctivitis (ARC) affects 30% of individuals in industrialized nations.
  • Accurate diagnosis and treatment of ARC depend on identifying specific causative aeroallergens.
  • Aeroallergen sensitization is a significant public health concern in urban environments.

Purpose of the Study:

  • To investigate and quantify aeroallergen sensitization in adults diagnosed with ARC in Temuco, Chile.
  • To identify the primary allergenic sources contributing to ARC in the specified region.
  • To provide data for improved diagnostic strategies for allergic rhinoconjunctivitis.

Main Methods:

  • Skin prick testing was performed on 375 adult patients (aged 15-64) with clinically diagnosed ARC.
  • Testing utilized a panel of the most prevalent aeroallergens in the Temuco area.
  • Diagnosis of ARC was confirmed using the Score For Allergic Rhinitis.

Main Results:

  • A significant proportion of patients, 62.4% (234/375), exhibited sensitization to at least one aeroallergen.
  • Among pollen allergens, Grasses (44.4%), Plantago (27.8%), and Cynodon (26.1%) were most common.
  • Dust mites, specifically Dermatophagoides pteronyssinus (70.1%) and Dermatophagoides farinae (62.8%), were the most frequent non-pollen sensitizers.

Conclusions:

  • Skin testing in Temuco should routinely include dust mites and pollens from Grasses, Plantago, Cynodon, Sorrel, Birch, Nothofagus obliqua, and Alder.
  • These identified allergens account for 93% of ARC cases in the studied population.
  • Implementing these targeted tests can enhance diagnostic accuracy and guide effective treatment for ARC patients in Temuco.