In a matter of a moment, with no apparent cause or injury I went from being able to hold a pen to simply not holding a pen well enough to write. My right thumb is almost completely useless as of 3pm today.
Pain is quite localised to thumb and ball of thumb. If I try to widen out my palm and fingers, I can't really do it. Equally I can't really clench the thumb in to a fist or stretch thumb across my palm.
Fingers ok, so can pick up with fingers clenching into palm, but nothing involving thumb. Hasn't lost sensation, doesn't have pins and needles, just hard to move without considerable pain.
What on earth could it be? It's really quite painful, and trying to get basics together for supper, and chop is proving very difficult.