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Does TTO cross-sensitise to or cross-react with colophony (colophonium)?

April 26, 2017colophony cross-react tto

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Does TTO cross-sensitise to or cross-react with colophony (colophonium)?

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Fact: Colophony is one of the compounds in a standard dermatology patch test. In some reports of allergy to TTO, patients have also reacted to colophony. This does not prove that TTO sensitised them to colophony or that colophony cross reacts with TTO.