Is it possible to be allergic to crayons?

Answer 1

I cannot see this to be the case with modern crayons. Perhaps when they still contained toxins.

YES IT IS! My friends daughter is! She has had 27 trips to the er since she started school in August. She is allergic to the dyes in all major brand of crayons. It is possible to be allergic, it isn't always the toxins. Although a few major brands still contain lead and some brands use phthalates a chemical used to make the crayon more flexible. There are no long term studies on the side effects of phthalates, but some research has shown the chemical compound has been linked to cancer (not that that should shock anyone, everything can be linked to cancer).