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Diagnosing Lanolin Contact Allergy with Lanolin Alcohol and Amerchol L101

Jannet Knijp

Lanolin contact allergy is frequently seen in referred dermatitis patients. It is a clinical problem, especially for those using lanolin containing topical medicaments. Lanolin alcohol 30% PET is the standard patch test agent for diagnosing lanolin contact allergy. However, supplementary patch testing with other lanolin derivatives seems to improve the identification of lanolin-sensitive patients. Particular attention is paid to Amerchol L101 50% PET., a mixture of 10% lanolin alcohols and mineral oil. The aim of this study was to determine which combination of lanolin derivatives is most effective in patch testing for diagnosing lanolin contact allergy.