here is the info
Small dogs, big hearts: a guide to ... - Google Books
I think this is exactly what happened and why i believe this vet should have sent you immediately to a neurologist
Neck pain in this breed is very serious and should be seen by a neurologist as there are many serious conditions that can occur and hopefully someone else will be able to learn from this situation as we all learn from each other that neck pain you go to neurologist in this breed