There are some medical things you mentioned I wouldn't be able to get into - and actually the skin topic itself is medical too. But I remember seeing people here mention they were breaking out in the face after quitting. I had some of that too, mostly during the initial months, but I think my skin is still getting used to the return to normal (instead of being assaulted by constant alcohol intake). I vaguely remember a 30-something friend from years ago telling me his dermatologist saying he was going through a "second adolescence" - and he had quit drinking a year and a half prior to that.
I suppose we don't typically think of acne as related to something serious, but if you haven't told your doctor all the details about your alcohol use (or abuse), then you probably should do. I'm not clear on whether you would have done that from your post.