Dear Irv, Although patients with tremor dominance , on-off, and dyskinesias (Type A Parkinson's Disease ) respond best to the Pallidotomy other symptoms are also often helped. I would encourage you to take your wife in for an evaluation with a good neurologist who is up to speed on Pallidotomies. Your E-mail address indicated you were from Toronto so I would recommend you see Dr. Anthony Lang at the Toronto hospital where William Berman had a Pallidotomy, see his post on Oct. 10. Another doctor to see would be Pat Kelley at N.Y.U. Dr. Don Berns 4943 Del Monte Rd. La Canada, CA 91011 818-790-8812 <[log in to unmask]>