This is for my mother, she had burr hole surgery for Sub.Dural Haematoma on April5 this year.She was given Anti . epileptic support like Eptoin & Levipil, as it was making her very tired, weak, appetite loss& severe skin break down her Dr.changed her epileptic medication Encroate Chrono 200(since 2months), her previous symptoms are much less but having severe back ache.Is it a side effect? Should she do liver function tests from time to time?