That all sounds like w/d symptoms to me. A really serious drinker can have w/d symptoms while they are drinking a glass of whiskey.
I agree with smacked, go to a Dr. - preferably an addictions specialist - and be completely honest about everything he is taking, even OTC pills. I do not believe anti anxiety drugs should be administered during detox but I am no Dr. He should get anti seizure and BP meds but again I am no Dr.
Good luck and keep posting, maybe even get him to post too? SR.com is a great place for support.