Hi, I do! Did you ever find out about what caused your symptoms? And if the vgkc had something to do with it?
I searched Google Scholar and found this article. I'm not sure if it fits your scenario or not. It talk about some reversible cases. The references at the end of the article might provide a lead to who is the leading expert.
http:// brain. oxfordjournals. org/ cgi/ content/full/127/3/701
Remove the spaces when you click the link.
Hope this helps.
Ren