The right answer is Parkinson's disease.
Deep brain stimulation, also called neurostimulation, is performed on 5 to 10% of Parkinson's patients. This form of treatment, heavy for the patient, is reserved for cases difficult to treat, sensitive to Levodopa, with significant fluctuations in treatment efficiency.
The decision to attempt the operation is, of course, case by case, when the person is sufficiently motivated, and that particular clinical criteria are met.
