I may have tendonitis, as with any injury as soon as you mention it, you find out lots of people have had it, It’s on my right arm, so I’m typing left-handed only. I’m hoping to not use it for a week or two to let it heal. So far the most complicated task I’ve had to do was brush my teeth left-handed. My toothbrush moves at super slow speed; up then down, up then down. Eating with chopsticks left-handed is also very awkward. I haven’t tried to cut with my left hand, I don’t trust my dexterity enough to not nick a finger. I did cut a chocolate cake up, because the incentive was great. So goodbye for now, I’m taking two weeks off to heal.