I would encourage you to look into testing for Arnold Chiari Malformation
and Postural Orthostatic Tachycardia Syndrome (POTS). EDS is linked to both
of these.
I used to faint/fall/blackout every time I stood up. Basically, my blood
pressure was low and when I went from resting to active, it wasn't
sufficient to get the blood to my brain and I passed out or got dizzy. This
is POTS. POTS is also referred to as Orthostatic Intolerance (OI).
EDS Today published a reprint of the study on EDS, Orthosatic Intolerance,
and Chronic Fatigue. You can read it online at the link below. Just click
the link here and then click Fall 2000 PDF. It's a large PDF file and may
be a slow download, but I hope you find it useful.
http://www.edstoday.org/newsletter/Issues/Issue2.htm
POTS/Chiari/EDS
http://potsplace.com/Winter_Spring2006/ws06news4.htm
-Barb