I forced myself to sleep on my back the entire night last night because I normally can't maintain this position for more than four hours and always switch to my stomach. But by staying on my back, I learned that the back of my neck gets numb, which probably is the reason that I switch to my stomach and have so many sleep disturbances throughout the night. Is it possible that TOS symptoms include back of the neck numbness or even just neck numbness in general when laying down for extended periods of time such as sleeping? Has anyone had TOS surgery and noticed an improvement from this?