If I had a nickel for every time I had an allergic reaction to nickels, I'd... be really miserable (that is, if I were one of these poor cashiers who have actually developed an allergy to nickels). I've heard of bakers becoming allergic to wheat, but cashiers becoming allergic to money is a new one to me. What are you going to tell me next, that doctors are becoming allergic to latex gloves? Oh wait... that's also real.
Allergy to coined money: nickel contact dermatitis in cashiers. "We report a 48-year-old cashier with nickel allergy and hand eczema and discuss the relevance of nickel-induced occupational hand dermatitis in cashiers. A literature review revealed that hand eczema together with nickel contact allergy is not rare in cashiers. The problems of various test results in nickel allergy and its importance in atopic eczema and in occupational dermatoses are considered. Provocative use tests are recommended to assess the relevance of patch test findings."
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