I also grew up getting the stuff horrible. Id get it in one spot and a few days later, it would be covering half my body.... even in the wind it would appear....
Ditto on the Tecnu. Best lotion Ive seen yet. You just want to make sure you scrub it hard "immediatly" with the tecnu. And let it stay on your skin for a while. 5-30 min.. One time I had to remove a elm with poison ivy coating it and i was in the middle. I scrubbed with tecnu and left in on half the day. I never did get much of a rash.
Those homeopathic pills work well also, but you want to start taking it weeks prior to exposure. and dont over take the pills. I took about a half a bottle (it doesnt say how many pills you should take) and i O.D. on the [censored]. I had poison ivy popping up all over. Same with when you have the rash.. dont take those pills. Once you already have the symptoms, wash the area with a commercial soap, some thing that dries your skin out. Then apply Rubbing Alcohol to the area. (Works Well) I used to get it soo bad, i would take 120 grit sand paper, scrub the [censored] out of the rash, and apply clorox. Dont try that... it doesnt work...Everyones body and immune systems are different and the rash effects everyone in a unique way. Just have to find out whats best for you.