Yes, I agree No magic cure.
Mine would get terrible anxiety if I had to leave town, by the time I got home the anxiety turned to bad depression. One trick I found that helps is leaving the TV on. Bedroom lights on, leaving the house as if I didn't leave at all. There was a lot less mess to clean up when I did it that way. I ended up just getting another dog. Oh, how he hated that dog when I brought him in. Dirty looks, beg hogging, competion on who could sit in my lap more. Just crazyness, but in the end they were the best of buds. And know I know, when they tore up my kitchen it was a team effort!
That was some time ago, my old dog is now 15 (still gets in te trash) but no more panic attacks when the door shuts.