Document Detail


Occupational allergic contact dermatitis from lichens in present-day Finland.
MedLine Citation:
PMID:  15701128     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Lichens are abundant in forests, living on trees, soil, stones and rocks. They contain usnic acid and other lichen acids that are contact allergens. Lichens and liverworts cause woodcutter's dermatitis, eczema that appears in the forest on the bare skin areas, especially in cold and wet weather. Occupational allergic contact dermatitis from lichens occurs in forestry and horticultural workers and in lichen pickers. Lichens can cause immediate allergy, contact urticaria, rhinitis and asthma and probably also photoallergic contact dermatitis. Lichens are used for the manufacture of oak moss absolute, a fragrance constituent. Oak moss absolute contains lichen acids and is one of the commonest contact allergens. Lichen acid allergy develops either from contact with lichens or from fragrances. We describe 4 cases of occupational allergic contact dermatitis from lichens during the past decade: 2 were farmers and 2 gardeners. 3 of them had allergic reactions to fragrance mix and oak moss absolute. Lichen contact allergy is an old, partly forgotten, syndrome that should be remembered for symptoms in contact with barked wood or wood dust.
Authors:
Kristiina Aalto-Korte; Antti Lauerma; Kristiina Alanko
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Publication Detail:
Type:  Case Reports; Journal Article    
Journal Detail:
Title:  Contact dermatitis     Volume:  52     ISSN:  0105-1873     ISO Abbreviation:  Contact Derm.     Publication Date:  2005 Jan 
Date Detail:
Created Date:  2005-02-09     Completed Date:  2005-06-30     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7604950     Medline TA:  Contact Dermatitis     Country:  Denmark    
Other Details:
Languages:  eng     Pagination:  36-8     Citation Subset:  IM    
Affiliation:
Section of Dermatology, Finnish Institute of Occupational Health, Helsinki 00250, Finland. kristiina.aalto-korte@ttl.fi
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MeSH Terms
Descriptor/Qualifier:
Agricultural Workers' Diseases / diagnosis,  etiology*
Allergens / adverse effects*
Dermatitis, Allergic Contact / diagnosis,  etiology*
Dermatitis, Atopic / diagnosis,  etiology*
Dermatitis, Occupational / diagnosis,  etiology*
Female
Finland
Forestry
Humans
Lichens*
Male
Middle Aged
Risk Factors
Time Factors
Chemical
Reg. No./Substance:
0/Allergens

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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