My doctor had upped my Dilantin from 300mg a day to 400 mg. After about 2 weeks of the new dosage I have broken out all over. There are red splotches all over my body and extreme itching. It itches like the chicken pox but without the bumps. I am now being weened off the Dilantin and given a prescription for Keppra. Is there anything I can do to stop the itching? I've taken Benadryl and got no relief. I'm going insane!!! I've taken like three showers today to get some relief but that only lasts for like 20 minutes. Somebody please suggest a cure or at least effective temporary relief before I scratch myself to death!