the sweating and the hot cold stuff is all quite normal rsd stuff as is the burning when something touches you.
the urination is not as far as i know. but not knowing you need to urinate and/or increased urination can be side effects from medications. i had that from cymbalta. so if you re on a new med, that could be it and that can be a problem. it could also be a separate issue like diabetes so you should have that checked sooner than later.
joan