Going through my first bout with Poison Ivy. 2 full weeks have past and the rash is still appearing. Left leg was first and the worst, now the right but at least the right isn't blistering(touch wood, at least yet). Seems never ending but hopefully it will stop soon and begin to heal. Hydrocortisone cream seems to provide temp relief of the itching, but it takes major will power to stop yourself from scratching....it's probably easier to quit smoking than stop scratching.