Getting up in the morning has improved thanks to some very helpful advice I have received from this forum regarding fluids and other POTS self help measures- Thank you. What I have noticed, though, apart from the rise in pulse on standing, is this incredibly low pulse pressure - that is the difference between the BP figures. This morning it was only 90/75 and that is after several error readings, and this is the norm for me when I stand - no wonder I get dizzy at times!This is consistent with the readings DR Bell talks about in his ME/CFS patients so I was wondering is this your experience? My theory is that there can be hardly any blood going round - no wonder fluids are required after a night in bed! It does improve during the day but not to normal levels by any means. Anyone else with these low pulse pressure readings?