I was prescribed Carbamazepine for trigeminal neuralgia and after taking the medication for 6 weeks, came out in a hideous rash all through my scalp , face, chest and back, which was extremely itchy. I am now awaiting the arrival of Gabapentin at my local pharmacy. Can you tell me if there is likely to be side effects from this new drug please? I am hoping that it will also take away the pain of my sciatic nerve which keeps me awake nights. I am currently awaiting a MRI scan also, which will hopefully reveal some of my nervous system?? problems. Await your reply. Val Walsh e.mail: YYYY@YYYY