My husband is 37 and has been on Dilantin since he was 12 . His seizures are under control but his doctor has ordered a MRiIto check for Cerabellum(spelling?) shrinkage and a bone density test. The Dr. says of there is evidence of damage, he wants my husband to switch to Lamictal. MY concern is if there is damage what will this mean? and If he does have to switch meds, what is the process for that? it seems a little scary to me, with the possibility of seizures until meds are stabalized. How long does it take? What about work? the children?