Raynaud syndrome - Wikipedia

They don't know the cause in a lot of cases, not mine anything. But it can hurt awfully. It's a vasodilation thing that happens in the extremities, usually the fingers, brought on by cold and/or stress. Kind of hard to explain which is why I included the link above.

Some medications can trigger it. I thought maybe the Adderall, but then, I was off it for nearly a week (problems with insurance paying for it), and I still didn't have it this morning, so no, I don't think it's the Adderall. Could be something linked to a rheumatic issue as I do have fibromyalgia, and an aunt with lupus, but really, they don't know. I've had it since 9th, 10th grade though. It is just a lucky thing I live in a climate that tends not to get very cold, but it will get mildly triggered by cold doctors' offices, things like that. Not as bad as this though.