Deep brain stimulation: current status.

In the last two decades, applications of deep brain stimulation (DBS) have expanded rapidly in the field of neurosciences. The most common indications for DBS are Parkinson's disease, medically refractory seizures, essential tremors, and primary dystonia. This device has also been used as an investigational tool in patients having Tourette's syndrome, tardive dyskinesia, and refractory seizures. In the field of psychiatry, DBS has been used for the treatment of refractory obsessive compulsive disorder and depression. The complications are mainly related to surgery, the device, and its stimulation. This article provides an overview of the current status and recent advances in the field of DBS.