Hives?

Jacob's had this weird rash thing going on all day.  He's acting fine.  We're not really sure what's going on.  We've consulted Dr. Google.  We've consulted Dr. Pranger.  (Dr. Pranger is Jake's real doctor.)  The overall consensus has been that he has hives.  I don't know why though.  He really hasn't been exposed to anything new.  He had peanut M&Ms last night, for the first time ever. Though, he's had many other peanut products without any reaction.  Also, we didn't notice anything was different until this morning.  If it was the M&Ms, we probably should have seen something last night.

What we first saw this morning looked like welts and bug bites.  Now it looks more spread out and blotchy.   He was itching a really big spot this morning, but otherwise he hasn't seemed to be aware of it.  It comes and goes and moves.  It seems to concentrate where he is warmest.  For example, he napped on his tummy with his legs tucked underneath him.  When he woke up, his whole belly was covered.  Also, it was heavily concentrated on the backs of his knees, as they had been folded.

Andy just ran to the store for some Benadryl.  I hate to medicate him when it doesn't really seem necessary.  He doesn't seem uncomfortable in any way.  I want to see if Benadryl clears him up though.  That way I can rest assured that this really is just allergies.  I think that's probably pretty obvious at this point - but allergies to what???

I apologize for this way lame pic.  He was crazy wild and didn't want to sit still for the camera.  The camera doesn't really do the rash/hives any justice either.  It's hard to photograph these things.