Simple test.....if it itches, it's poison ivy, if he doesn't touch it and acts painful when touched, it's a burn. My bet is he constantly scratches and spreads the agent.
Look at the pics and they show a large blister in the middle with smaller ones on the fringes. That looks EXACTLY like poison ivy.
If he doesn't respond to verbal comands, it will be almost imposible to stop him from touching them and spreading the agent, even to his eyes( and scrotum). Then you really have a mess.
If it's a burn, well, keep them covered and try not to bust the blisters for as long as posible. Then apply antibiotic cream.
We haven’t seen him scratch at all. Which is one of the chief reasons why I don’t think it’s poison ivy. However, Matty doesn’t react the same to certain things. His brain may be feeling the itchiness, but not telling him to scratch. In cases where he doesn’t know what it is, he will simply ask for a “sticker” which is a band-aid and leave it along until bath time.