Deep brain stimulation won't cure your disease, but it may help lessen your symptoms. If deep brain stimulation works, your symptoms will improve significantly, but they usually don't go away completely. In some cases, medications may still be needed for certain conditions.
Deep brain stimulation isn't successful for everyone. There are a number of variables involved in the success of deep brain stimulation. It's important to talk with your doctor before surgery about what type of improvement you can expect for your condition.