Post poison ivy rash?

[CalhounLoon]

2 summers ago, I was at church camp and laid in poison ivy unknowingly at night during a game. Later that night, I woke up to intense itching and looked in the mirror to see what would later turn out to be a very nasty case of poison ivy. This was in early august. It lasted me until the last week of august. Ever since that event, I've had recurring red bumpy rashes that itch pretty badly. It's been two years and these continually pop up in the same places that I had poison ivy on. I've gone to several doctors and dermatologists and have gotten different answers and medicines to help. None of the information or medicine given has helped or been correct. The rash doesn't tend to pop up during the winter. It sort of resembles chronic idiopathic urticaria in the bigger patches of the rash and just smaller red dots in other places. If anyone has any insight as to what this might be, I've become extremely desperate for answers and haven't gotten any from doctors. Thanks.