Check out Dr. Peter Rowe's YouTube video on orthostatic intolerance - it is very clear, and goes into the various forms, how to get a diagnosis, including articles you can take to your doctor if s/he...
Orthostatic intolerance is not well understood by many doctors, and like ME/CFS, is often missed! I also went to vestibular rehab and they did not pick it up... was sent to neurologists, headache...
I think the idea of a communal house for those of us with chronic illness is a great idea... I also have no family support at all, and friends have left my area, and are too far away to be of help......