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EC number: 231-843-4
CAS number: 7758-94-3
A case is reported of allergic contact dermatitis due to iron in a
toolmaker. Patch tests were performed on this patient with 11 different
metals in appropriate dilutions. At the time of the 24 hour reading all
tests were negative, but at 72 hour reading a strongly positive reaction
to ferric chloride 2 % aqueous solution was seen. The morphologic
changes at this positive patch test were identical with the lesions of
the widerspread clinical eruption. Considering history, chlinical
changes and patch test results, the diagnosis of allergic contact
dermatitis due to iron was considered established.
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