Thank you for your replies and concern. I do have a bp cuff and do monitor both pulse and bp. One of my physicians is aware of this problem and I have an appointment on Monday with another.

I have only been symptomatic once while experiencing the low blood pressure. I guess I just wondered if this had something to do with autonomic nervous system involvement associated with RSD, and wanted to go to the appointment armed with some info from others who have same dx.

I do keep well hydrated most of the time and don't really make any quick moves anymore.

The weird thing about this particular episode is that there were none of those hypotensive warning signs.

I will keep in mind involvement independent of RSD.

Thank you again.