There's a sticky in the alcoholics forum called "What to expect", you should probably read it.
Sounds like WD to me, albeit a "mild" case. Still, it's uncomfortable as hell, and if he's anything like the rest of us, the anxiety will drive him back to the bottle. Meds are fine for the short term, acute WD, but to STAY sober he's gonna need a good recovery program (like AA). In the obligitaory my opinion, of course.
I'm pushing a year now, and thanks to the 12 steps and my relationship with God, anxiety, depression and all those other physical symptoms are but a memory.