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Related Experiment Videos

Allergic conjunctivitis to chamomile tea.

J Subiza1, J L Subiza, M Alonso

  • 1Centro de Alergia e Inmunología Clínica, General Pardiñas, Madrid, Spain.

Annals of Allergy
|August 1, 1990
PubMed
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Chamomile tea eye washes, a common folk remedy, can trigger allergic conjunctivitis. Allergens in Matricaria chamomilla pollen within the tea are responsible for these adverse ocular reactions.

Area of Science:

  • Allergology
  • Ophthalmology
  • Dermatology

Background:

  • Chamomile tea is a popular folk remedy for eye conditions like conjunctivitis.
  • Topical chamomile application has been linked to contact dermatitis, but not IgE-mediated reactions.
  • Ocular exposure to chamomile preparations can potentially cause allergic eye reactions.

Purpose of the Study:

  • To investigate the potential of chamomile tea eye washes to induce allergic conjunctivitis.
  • To identify the specific allergens responsible for chamomile-induced ocular allergic reactions.
  • To evaluate cross-reactivity between chamomile and related pollens.

Main Methods:

  • Case study of seven hay fever patients experiencing conjunctivitis after chamomile tea eye washes.
  • Skin prick tests (SPT) and conjunctival provocation tests (CPT) with chamomile tea extract, Matricaria chamomilla, and Artemisia vulgaris pollen extracts.

Related Experiment Videos

  • Enzyme-linked immunosorbent assay (ELISA) to detect IgE activity against chamomile and pollens.
  • ELISA inhibition studies to assess cross-reactivity.
  • SPT and CPT in 100 healthy controls.

    • Main Results:

    • All seven patients developed allergic conjunctivitis and/or lid angioedema following chamomile tea eye washes.
    • Positive SPT and CPT to chamomile tea extract were observed in all affected patients.
    • ELISA confirmed IgE activity against chamomile tea, Matricaria, and Artemisia.
    • ELISA inhibition demonstrated that Matricaria pollen extract fully absorbed IgE activity to chamomile tea, indicating cross-reactivity.
    • Controls showed limited positive reactions, with only two exhibiting conjunctival responses.

    Conclusions:

    • Chamomile tea eye washing can induce allergic conjunctivitis.
    • Matricaria chamomilla pollen present in chamomile infusions is the primary allergen responsible for these reactions.
    • Cross-reactivity between chamomile and certain pollens is significant in the development of ocular allergies.