How long does it take to get rash after exposure to poison ivy?
In some rare cases medical attention might be necessary. How Long Does Poison Ivy Take to Heal. Poison ivy rash can appear as early as 3 to 4 hours or as late as 7 to 10 days after exposure to the plant.It all depends upon the level of sensitivity of the individual to the plant.The allergic reaction can be triggered by direct contact with any poison ivy plant part, be it the leaf, stem or tendrils.n some rare cases medical attention might be necessary. How Long Does Poison Ivy Take to Heal. Poison ivy rash can appear as early as 3 to 4 hours or as late as 7 to 10 days after exposure to the plant.