--one of the problems with neurological symptoms is that the exact same subjective impression of symptoms can ultimately stem from problems with the spine or nerve roots, or from problems with the peripheral nerves--those outside the central nervous system (brain and spinal cord)--or even both simultaneously. Therefore, unless there's obvious evidence--spinal compromise due to trauma, for example--it often takes a considerable amount of testing to find a cause, if one can indeed be found. (It's very much a process of elimination/exclusion.)

A lot of us like to use the Liza Jane spreadhseets, which are about as comprehensive a listing of testing for neurological symptoms, based on type, that can be devised (and the spreadsheets are also good for tracking results over time, to look for patterns):

www.lizajane.org