I have a very similar issue. I tried to use Vocola and it worked for a while but then i kept straining my voice. I recently had to quit school because I've strained my voice and hands too many times to count. But its not just my hands anymore. Anything that involves any amount of real effort for more than a few minutes usually ends up injuring a muscle group.
Has anyone successfully come back from something like this? Life is getting pretty bleak.