This happens every once in a while but it's really starting to mess with me now. If any pressure is applied to the top half of my thumbnail or thumb it hurts. A lot. Gaming? Hurts. Writing? Hurts. Thumb pluckin' my bass? Hurts. I was installing some blinds today and I had to really pay attention so I didn't whack my thumb on anything. Of course, I did and the installation was subsequently postponed until later in the day. Anyway, does anyone have any idea what this could be? I am clueless and in pain . Halp me pwease. For whatever it's worth, it's only my right thumb (you know, the important one). Ol' lefty is fine.