When you are young, your chance of a successful DBS is excellent, but if you are older - my guess is over 60 - I think you run a huge risk that a DBS will make things much worse. It may make older brains confused and disconnected.

My brain is addled quite enough by Requip and cabi/levad. and Amantadine, but at least I have some control over the medicines I take. At my age the risk of DSB adversely and permanently affecting my thought process, muddling my reasoning and impeding my speech is much too real.

And anyway, even if I were very young, and even if DBS was 100% guaranteed to help without any risk whatsoever, I'd still not be brave enough to have holes drilled in my head and wires inserted in my brain.
I really admire all of you who have, or plan to have DBS. You have great courage, and I wish you all great success.

birte