Two issues. #1. increased blood pressure common with RSD. keep an eye on it . It took me 2 years to get mine down and I always had very low/normal blood pressure pre RSD.

# 2. I had these "spells" in my 1st. 2 yrs of RSD and no Dr. could ever explain them. I just recently learned thru another RSDer from a Dr. at University of Kentucky (she has same "spells" ) that they are called Anatonic seizures. Mine quit after SCS implant. So google this and see if this is what you are experiencing.

Sorry cannot help you with any block info. None ever worked for me----Sorry.
Hope this helps-Fondly-Carol