Hello Chris and fellow list servers I am particularly interested in the effectiveness of DBS for treatment of rigidity in PD. My brother has minor tremors on the right side but has extreme rigidity on the left side. His left arm has a slow rolling motion and his left arm and leg have little normal working movement as they are so rigid. He has just started taking Tasmar and although it is early it seems to be effective. He has been considering a pallidotomy for two reasons: (1) DBS is not covered by health ins. (2) His local GP advised him that DBS was not very effective for symptoms of rigidity and chance of infection was quite high. It is interesting to see a post indicating that ins. companies are beginning to cover DBS. Where can I go to get data on the effectiveness of DBS for symptoms of rigidity? Regards, Ron Erickson