The Food and Drug Administration ( FDA ) approved DBS as a treatment for essential tremor in 1997 , for Parkinson 's disease in 2002 , and dystonia in 2003 .
The Food and Drug Administration ( FDA ) approved DBS as a treatment for tremors in 1997 , for Parkinson 's disease in 2002 , Tourette syndrome in 1999 , and dystonia in 2003 .