[schoen]

I just looked up this Wikipedia page (note: contains slightly disturbing photos of people's skin rashes)

https://en.wikipedia.org/wiki/Urushiol-induced_contact_derma...

and it notes that

> People vary greatly in their sensitivity to urushiol. In approximately 15% to 30% of people, urushiol does not trigger an immune system response, while at least 25% of people have a very strong immune response resulting in severe symptoms.

I've also heard this about poison ivy. (I assume cashew plants have less of this irritant than poison ivy does.)

[pmiller2]

Yeah, my mom only has to walk past some poison ivy, within a couple of feet, and she will end up with a bit of a rash.