All of the following are used for treatment of stiff person syndrome, EXCEPT:
Optimal treatment of stiff-person syndrome requires therapy of the underlying tumor, glucocoicoids, and symptomatic use of drugs that enhance GABA-ergic transmission (diazepam, baclofen, sodium valproate, tiagabine, vigabatrin). A benefit of IVIg has been demonstrated for the nonparaneoplastic disorder but remains to be established for the paraneoplastic syndrome. Ref: Harrison's principle of internal medicine 17th edition, chapter 97
Diazepam
Valproate
IV Ig
None of the above