I have a 26 yo mentally retarded daughter who started having seizures 2 months ago. She had an EEG,and Cat scan which were both normal. When I inquired about an MRI, her doctor said he didn't think it was necessary---since someone mentally retarded already has brain damage--and seizure activity is not that unusual. Should I go with his opinion, or keep pursuing the MRI?She was on Phyentec 300 mg/day, but had her level drop to 2.5 and had a status epileptus episode....now we are on dilantin 400 mg; 200mg in AM, 200mg PM---hopefully this will work.