I have never heard of this either, though carpal tunnel syndrome is common. I think the point is that when you have a particular interest in something, you see a lot of it. So I see a lot of yeast infections of the nipple and breast, whereas a lot of other physicians have never heard of it. People who don't have thumb tendinitis don't go to a physiotherapist to have it treated, whereas a large proportion of those that do, do. Jack Newman, MD, FRCPC