This sounds like a very severe case of poison ivy
. With the vast majority of cases of poison ivy, a short course of steroids such as prednisone or hydrocortisone should cause the rash to go away and the itching should follow shortly after. If you have completed a course of steroids and the rash is still there, I am worried that you may have something else or at least something in addition to poison ivy. If this is just poison ivy, then I would say that you are more sensitive to it than most people.
I suggest that you schedule an appointment with a dermatologist
. The reason I would recommend you see a specialist is that you may have failed first line treatment for this rash. The dermatologist can take a look at the rash, review the treatment you have received so far, listen to your continued symptoms, and decide what further treatment is necessary. It is possible that the doctor
will place you back on steroids. An alternative would be to prescribe a steroid containing cream. If your rash and symptoms are improving by the time you see the doctor, it would be reasonable to just treat the itching with an anti-histamine cream or pill.