This article is chock full of BE AWARES, BE CAUTIOUS and APPROACH CAREFULLY's....
http://www.iasp-pain.org/AM/Template...ContentID=2083
Two aspects strike me about this: 1] the cautions interspersed throughout the diagnositics and 2] the types of doctors and papers, 'names' if you will, that are used as references.
It might be useful tho as it incorporates a variety of neurologic and vascular etc. causes into the medical 'assessment' mix. Extra food for thought? - j