My doc sometimes has to take my BP at the ankles because both arms give a false low reading due to TOS. Took some convincing on my part, but after having me drink a lot of H20, resting and eating some crackers before taking it again, he doesn't question this phenomenon any longer…

Vascular TOS explains the color change in your hands, but I think the tingling is a sign of Neurogenic TOS. I guess, technically, since our nerves contain (tiny) blood vessels which are subject to compression injury, all TOS presents with at least some vascular sx.

Just one of the reasons I call it "Thoracic Whatlet? Syndrome"!! Are we having fun yet?