Has anyone tried using a stability ball as your office chair with an existing neck injury? A day of sitting in this chair seems to create far more muscle spasms and swelling in my neck than pretty much a day spent doing anything else. I am TRYING not to turn to too many drugs if I can manage it.

I've read that some use stability balls and have decreased muscle spasms and tension, but their symptoms may have been from from job stress or a bad fitting chair...I've a quite technical position and right now I do not have the option of cutting my hours back - there is just too much work to do and I am the only one qualified to do it at this time.