Perfson

I have few thoughts about it. But im not a doctor or anything, im just learning stuff on internet and i couldn't fix my own cerebral blood flow problem yet. 1. Weird that you go to toilet lots of times, considering you take a lot of salt. Maybe you really drink too much water, if not, then maybe salt can't retain in your body. Fludrocortisone can make you retain lots of salt. Not sure if it would help in your case. 2. I know that air hunger is common symptom of POTS, but i didn't know that you can experience it while laying down. Probably the case in hyperpots. Though, waking up at night cuz of air hunger is common symptom of sleep apnea (and OBS). If this air hunger occurs when you are not sleeping, but still laying down, then sleep apnea is just the result of severe POTS, in my opinion. 3. Im curious why do your head "starts hurting very badly" when you are laying down. Once i read conversation on a forum about "reverse POTS", which happen in some people when they are laying down. It's called Intracranial Hypertension, when blood is having troubles moving back from your head to your heart. People in that forum thread suggested to use ice (cold) pack on your forehead, or under the neck. I personally sometime experience something like that, and not sure if cold helps me with this personally. Obviously it should be something comfortably cold, and neck is quite dangerous place to cool down too much. Another though that if it's not intracranial hypertension, then maybe it's Craniocervical Instability (neck problem which can be a reason of POTS or IH), and when you are laying down your instability getting worse. But it's my own theory. 4. If you don't meet the criteria for POTS, maybe you have Hypocapnic Cerebral Hypoperfusion. Which is another kind of orthostatic intolerance.