Inhishand sorry hugs to you. I do want to say I do have RSD and TOS. I have problems with the sun also I loved the sun always got a great tan but now it is my enamy it burns the living heck on my affected skin even being a passenger in a car and the sun shining on my arm is bad! OUCH! and I also pass out have talked to my doc about it too, I will see if it gets better but I believe it is a combo of blood pressure at times being way to high and passing out, at times my body just shutting down so it can heal, and at times my meds all play into it so I will have a jouirnal for it to find out.
Oh my mouth is dry also like a desert I figure my meds are doing it YUCK! I hope you get some relief...