This is an interesting poll because I have had major Dysautonomia for the last 13 years but I have had POIS over 30 years now. I never read of anyone complaining about true Dysautonomia on the forum or on the Facebook group. Have Hyperadrenergic postural orthostatic tachycardia syndrome (Hyper POTS for short), I also have Delayed Orthostatic Hypotension (OH) and Inappropriate Sinus Tachycardia (IST). Along with gastromotility delays and dumping. There are a handful of different types of Dysautonomia and they are tested and treated differently. I won?t go into detail about what each of mine mean but Dinet.org has a good informative website and forum about various types and a good physician list to get tested. The main test for most starts with a Tilt Table test to see how your heart rate and blood pressure differ when you are slowly raised from flat to head up position. The Hyperadrenergic part means that during the tilt table test they measured my neurotransmitters/ catecholamines and found that Noradrenaline/norepinephrine was high upon standing. At this point I am an expert of Dysautonomia, not by choice and not bragging about it, but I know more than most doctors about it because I have read thousands of pages on it and watched lectures at conferences. I was only diagnosed in 2011, 8.5 years ago, I figured it out by accident and then went to an expert on that physician list who tested me to confirm it.
I think my POIS caused my Dysautonomia possibly because my spine is involved in my POIS and a lot of Autonomic nerves branch off from the spine. Or it could be from a hormonal or autoimmune reason because I have another autoimmune diagnosis which is known to cause Dysautonomia. But really any illness, can cause Dysautonomia because the autonomic nerves are located in connective tissues and almost every illness can affect connective tissue.
Also after orgasm all of my veins get extremely dialated or relaxed and all my veins pop out for hours afterward.
I do not believe that a majority of us have this connection and I do not believe the theories of Dysautonomia causing POIS.