My 4 year old daughter has been on omnicef twice for an ear infec...

My 4 year old daughter has been on omnicef twice for an ear infection. After 8 days the second time she broke out in a rash all over her body. There were large welts and redness on her back stomach, legs, feet, and face. It is very itchy and comes up in one place and then goes away then comes up in other places. The doctor says this is an allergic reaction and could go on for 3 to 4 weeks. She prescribed orapred and recommended oral benadryl to counteract this reaction. The rash has improved but has not gone completely away.