In the onset of my RSD I experienced what I then called "spells" that put me in the ER 3 times. This was before diagnosis. I recently learned from another RSDer that what I experienced were anatonic seizures which ARE REAL!!!!They started with the buzzing in my head then loss of use of my neck,arms,legs etc. After my 3rd.ER trip the neuro. Dr. there told my husband that I just needed a shrink!~!! We no longer live in that area and I now have an SCS that has stopped these seizures as well as some of my RSD pain . Check it out and hope this helps-Fondly-Carol