Answer:
i believe this is actually a common condition in dogs that is treatable and manage able, this happens with food bowls either plastic, ceramic, or metal, your dog will get a rash as well as bumps from scraping the bottom of his food bowl while eating, try changing out his bowl with a different type of food bowl to see if that helps, like if he has a metal/stainless steel give him a ceramic or plastic bowl instead or vice versa it completely depends on the dog in the case of which one they can react to the most...
I had a Doberman, and he would get rashes and bumps like that, and this was the cause...
Explanation:
This could also be caused by poison ivy, sumac or poison oak, if this is the case get him some pet grade/dog grade cream or treatment to see if that could help...
but I would bet it's one of these two problems if neither of these things help, I would definitely recommend taking him into the vet to get checked out because that would mean it's not some common more treatable things that's going on... and in the case if it's an allergic reaction to either something he ate or something like a poisonous insect i would definitely take him in to get looked at cause depending on what it is that could send him into shock, but try to treat it with what i said above first and stay calm and don't freak out just yet...
