I have been thinking about your query all day. I have Reynaud's and it's been awful lately. I thought it was because the air-conditioning at my job has been broken and it has been a constant 68 degrees at my work for the past three or four weeks. I spend 9 to 10 hours a day there, four days a week, and I am sure you can imagine what that does to my fingertips, as well as my joint pain and my pleurisy, even when wearing a sweater. I bought some silk glove liners to wear under my wrist/hand braces and I wear sweaters while working, but I find that by mid-day, my fingers are purple, and my nail beds are white and my fingers are so cold and stiff that it is ridiculous. I sit in front of a computer and type for hours on end. So after thinking about it all day, I think you might have something with thinking that Reynaud's might be worsened with that kind of activity. I am sure the air-conditioning situation isn't helping, and I am also pretty sure that the fact that my wrists are heavily involved in the joint pain/fatigue with the lupus probably is restricting some of the blood flow to my fingers, but I notice the Reynauds the most during the day, at work, while typing.
So, that was long-winded, but there you have it. I think you might be right, at least to a point. What does everyone else think?
"If you think you can, you can. If you think you can't, you're right". - Mary Kay Ash