Part of what makes getting a dx of rsd hard is that sometimes one does not have all the symptoms or the usual of why it happened. That was me and I have rsd and pn. It also has changed over the 4 years.
Have you been to a neurologist? I am sorry if you mentioned but if not I would.
I know you stated about alcohol but did you have any problems with drugs rx or not?
I know addictions are so hard to beat but you can. Whether this happened because of the alcohol or not it does not help you now by drinking which I am sure you know in your heart.
I hope you feel better