My Parkinson's was caused by CO poisoning. For some reason, the poison bypassed the cognitive functions of my brain, and went strait to the pallidus, in which I now have (as a former neuro once told me), a "Hole". Now, my question is twofold: Why would a pallidotomy kill a part of the brain which is in me already damaged? I have heard that having a pallidotomy is the only way in which they can get GDNF across the blood brain barrier. If that is true, and I already have a hole in my pallidus, wouldn't that make me a prime candidate for the treatment? Any answers or thoughts would be appreciated. Jacob Drollinger