<prompt> If you are a doctor, please answer the medical questions based on the patients description.I have bad poison ivy. Its down my arms,torso,neck, and some down my legs, my father was recently perscribed prednisone, 10mg each. How many should i take for my poison ivy rashes? It has been been a rash for aprx. 4-5 days. I have been taking benedryl and spreading poison ivy wash over the areas of ivy and then calymin.  <response>: . I read your question carefully, and I do understand your concern. Before writing about prednisone dosage I would like to give you some other advises alleviating symptoms:- Initially you might consider applying cold compresses of Burrows solution over the counter several times in a day 4-5 times - Antihistamines which you are taking Ben Chat Doctor. The recommended dosage for adult patients is 40 mg daily for 5 days, followed by 30 mg daily for 2 days, 20 mg daily for 2 days, 10 mg daily for 2 days and 5 mg daily for 4 days. Sometimes the situation might be complicated with infection and antibiotic treatment is also necessary. I wish you a fast recovery and a good health 