Musicians.

The thing is, when we say "my ______ hurts," what we mean is "my _____ hurts and I'm afraid it won't get better. I'm afraid my career is ending, right now, and that I'm powerless to stop it. I'm afraid that this thing I've put so much time and money and work into is going to be useless, because how many Leon Fleischers can there be?"

So. When you hear a musician whining about their shoulders or their wrists or their whatevers, cut them some slack. It's scary.