Hello can gabapentin cause undiagnosed dystonia to become worse? I take sinemet now and it helps my tremor and dystonia. Now at 38 they diagnosed me with mild subcortical dementia. My pain management doctor feels it may be the gabapentin 300 mg 3 times a day that I have been taking for over a year now. (I originally complained about it causing sever confusion bit she told me to keep taking it. And now is only listening since neuropsycholocal testing show mild subcortical dementia? Could it be possible I have pd and not DRD. And the neurotin is making an undiagnosed MCI seem like dementia? And once I am weaned off of the gabapentin if this is the cause will it be perminant? Or will I get better in time?