I didn't read every single one of these messages, but I do want to recommend "Borough's Solution." You can get it at the drug store. It comes as a packet of dry crystals that you mix with water. Then soak strips of fabric in the solution, and place on the poison ivy spots. It seems to dry them up.
Having never had poison before, I spent one Memorial Day weekend pulling it out of my hedge with bare hands! Well, I got it, but good: my hands swelled so much that the cracks between my fingers began to bleed. Never, EVER, again will I be so stupid!!
Jory