I thought I would throw out two unrelated queries about which I seem to be equally curious. I would appreciate any comments regarding either. 1. "Tens" Units A chiropractor whom I sometimes use for muscle spasm and other symptomatic problems has been participating in an inernet symposium on neurology. One of his brethren claims to have had some success with imbalance from PD by using something which I believe is called "Tens" units - electrical impulses itended for pain control.????? 2. Wheelchairs - Can someone recommend a lite-weight wheelchair I can throw in the car and move about in easily by myself.