My father is 90 years old and is taking prednisone. He has rheumatoid Arthritis (developed at age 88). Is there anything he can do for the terriable side affects - dizzy, puffy face, but worse is the itching. He can't get below 15 or 17 mg of prednisone. Is there anything else he could take and how can he get off this stuff without all the itching?