All I can do is a one subject, one shot study- some people accept them. - some don't. At the moment we are a 3 walker, 2 tens units and one car family. We use the light weight walker to put in the car. David can use a cane, so far I cannot. I keep trying , because that is the only way I will be able to. I try only in the bedroom and near the bed, so falling will be safe. I am getting better. To encourage my self I bought some pretty canes- who need plain ones for a long, long time As to the tens unit I was ( am ) going to try it where David had a severe back injury and not on the PD- I think we can tell the difference, if not we can always turn it off. We are both pretty battered but had a lot of fun, still do, but not it is talking and watching the grand kids. Those tens units help a lot. They are not so good near the back surgery I had ( five months ago ) . I have to put the electrodes too far away from the incision. Being a patients teaches one a lot.- not what you really want to learn. I have found out about lidocaine patches. They work for the surgical area and knee. If you didn't have to take them off in 12 hours I would just plaster them every where. Would they possibly help PD. Bob, if they release endorphins why don't the help PD. I think it is obvious I have had no medical training but years of nursing. Not once in all of those classes did they mention endorphins or tens units. Why don't you give us a lecture so that we may understand more. Thanks , Nita