The lifestyle advice for orthostatic intolerance includes raising the head of your bed so that the whole bed is on a tilt. The idea is to both recondition your body and keep fluid in your blood rather than it moving to your bladder and dehydrating you during the night.
Advice varies considerably on how much to raise your bedhead. European Society of Neurology Federation guidelines
say 8" to 12". A study
on improving orthostatic function in healthy people used 18" and their measures had improved when they were assessed at the end of a week. The benefits are generally supposed to take several days to show up.
Info on how to raise your bed in this thread
If you have both OI and CFS, please take the poll!
[Administrators, can it be made sticky, please? Also, have I messed up so that individual names will be shown in terms of how people vote? Also, I seem somehow not to have this introductory text above the poll, ermm...]