Poison Ivy/oak

Yes, especially if you inhaled it which can be quite dangerous (b/c your throat can swell from the irritation). Keep a careful eye on this and I would suggest Benadryl and a trip to the Dr. just to make sure everything's okay.

It's certainly possible if any of it was accidentally ingested and it doesn't even have to have been plant matter that was ingested. With poision oak/ivy the toxin is contained in an oil that is almost impossible to wash off without special soap. The oil is easy to spread all over your body though, which is why you're not supposed to scratch the rash since you will be spreading the oil by doing so. If the oil ended up in the throat it could certainly cause enough swelling to trigger the gag/nausea reflexes. Do please see a doctor though. There are many things a doctor should be able to recommend that will bring enough relief to start recovery and make healing possible.

My brother once slept in a patch of poison oak (we're from the Pacific Northwest which is one of the few places that actually has poison "oak" vice "ivy") while camping with his best friend and ended up sitting gingerly on the edge of the couch for about a week afterward covered in calamine and holding his arms out to his sides stiffly. His face looked like the guy in that old Cher movie "Mask" it was so swollen, but he didn't have any nausea associated. That was the worst case I've ever heard of. He had it all over just about every inch of his body. If he didn't have nausea I would think that it's only going to happen if some of it gets ingested, or if the person infected has extra sensitivity to the toxin.

It might depend on two things; one is whether you are just so generally sick from the exterior symptoms that your body is struggling in every possible way to expel the poison (lots of illnesses can cause that symptom in people with sensitive stomachs). The other is whether you might have ingested any by mouth.

I have a sister who is exceptionally reactive to poison oak, and inhaled some smoke from some that was thrown on a fire. She was extremely ill for about 10 days after, breathing and nausea, blistering in nose, mouth and throat (and maybe stomach?), massive rashes on all exposed skin. She had to have cortisone shots and was nearly hospitalized. Hope the breakout you are wondering about isn't nearly that bad.

By the way, there is a very good skin cleanser for external exposures called Technu (google for more info). It's popular with people who have to work in brush or forests, and it works even after an outbreak starts. My husband is very sensitive, and can avoid or dramatically limit a rash with this product.

Everything that has been worn, slept on/in, etc by the person that has this should be washed very well - use the laundry soap FelsNapatha, it's a bar soap (Kroger's here used to carry it - have one of my own very allergic so always kept some). Even if the person has already bathed - bathe again using this soap as it will not hurt them but it will encapsulate the oil and remove it (same as it will do in the wash). My pedi gave me this to use many years ago when we first started having breakouts! Good Luck!

I don't know. My husband has had it so bad it looked like leprosy. Consult your pedi because if so, it can't be a good thing. Sorry you're dealing with that.