[Deep brain stimulation in neurological illnesses].

Advanced Parkinson's disease, essential tremor and dystonia are the most common indications for deep brain stimulation (DBS). The patients having this disease should be referred to DBS assessment at a stage where a satisfactory response to motor symptoms is no longer obtained with conventional medication. DBS therapy is acceptable also in epilepsy, when standard epilepsy surgery is out of question. To date, about 500 patients have had a deep brain stimulator implanted in Finland.