Robert M. Gary writes:

If he eats some he could lose consciousness. He said he was on a
school bus once and some kids in the row in front of him opened a bag
of nuts. He broke out in hives. I'm not sure how limiting the hives
are to PIC. Apparently peanuts give of a dust that some are very
allergic to (learn something new everyday). He did use a spoon once
that had been used for peanut butter and apparently not cleaned well
enough and he dropped to the floor.

Allergic reactions can also be psychogenic, which bodes even worse for
obtaining a medical.