Have you ever heard of Jewelweed,
Impatiens capensis as a natural treatment for poison ivy? You might even have some growing... I believe it's naturalized or native to Texas. A salve of jewelweed is used to help it heal poison ivy rash quickly and keep it from blistering. Jewelweed is good for healing all sorts of skin conditions.
I have never tried it because I've never had a reaction to poison ivy
I've accidently handled the stuff too, with no reaction at all. I don't touch it though cuz I don't wanna push my luck!!
That is very interesting about poison ivy making you feel blah - you are obviously very in tune to your feelings correlating the PI to your mopiness!
A bath with honey, vinegar and a sachet of crushed comfrey will also heal burns, and other injuries.