Can a fruit allergy cause a full body rash?

Can a fruit allergy cause a full body rash?
My son ate blueberries this morning, it was the only uncommon food he has had today. he broke out in a full body rash at bedtime.

yes

Yes it can..

It could be that. Gotta have him checked out to be sure.

yea it can…go to a doctor

Yes a full body rash is possible for a food allergy. my sister had it happen to her with grape fruit