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Colletotrichum fioriniae Development in Water and Chloroform-based Blueberry and Cranberry Floral Extracts
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Colletotrichum fioriniae Development in Water and Chloroform-based Blueberry and Cranberry Floral Extracts

Published on: April 12, 2019

Lichen extracts.

Peter C Schalock1

  • 1Department of Dermatology, Massachusetts General Hospital, Harvard School of Medicine, Boston, MA, USA.

Dermatitis : Contact, Atopic, Occupational, Drug
|March 27, 2009
PubMed
Summary
This summary is machine-generated.

Lichen additives in products frequently cause allergic contact dermatitis. Identifying usnic acid and oak moss absolute aids in screening patients exposed to natural or botanical skincare.

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Area of Science:

  • Dermatology
  • Toxicology
  • Allergology

Background:

  • Lichen-derived compounds are increasingly recognized as allergens in consumer products.
  • Allergic contact dermatitis (ACD) is a growing concern linked to natural or botanical ingredients.
  • Usnic acid and oak moss absolute are common lichen-derived additives found in commercial goods.

Purpose of the Study:

  • To highlight the role of lichen-derived additives in allergic contact dermatitis.
  • To identify the most prevalent lichen-derived allergens.
  • To provide guidance for clinical screening of patients using "natural" products.

Main Methods:

  • Literature review of reported cases of ACD linked to lichen derivatives.
  • Identification of common lichen-derived allergens in commercial products.
  • Clinical relevance assessment for diagnostic patch testing.

Main Results:

  • Lichen-derived additives are a significant cause of allergic contact dermatitis.
  • Usnic acid and oak moss absolute are the most frequently implicated lichen allergens.
  • These allergens are present in various "natural" and "botanical" formulations.

Conclusions:

  • Clinicians should consider lichen-derived additives when evaluating ACD, especially in patients using natural products.
  • Screening for usnic acid and oak moss absolute allergy is crucial for diagnosing ACD related to botanical products.
  • Awareness of these allergens can improve patient management and product formulation.