tDCS stands for transcranial direct current stimulation...sounds scarier than it really is...lol! Essentially I think of it like a tens unit that I put on my head instead of my rsd areas (though I have one of those that I use as well).

The walking is a very good things and it is definitely worth it to keep it up if you can. Most of us get into the worst trouble when we stop using the RSD limb or guard it too much...then it just becomes a much harder cycle of pain to break out of. It helps me to have a routine that I do each day which includes the hot baths with epsom salts (twice a day I have been doing it recently) and those seem to help me to get started in the mornings.

Take care and keep us posted.