Want To Let You All Know About This Health Thing I Have, Part One

My left middle finger hurts if I move it laterally.  It hurts down to the end of my third/middle metacarpal, aka the bone at the other end, closer to the wrist.  I don't know how it got hurt, but sometimes you can't help but move your fingers in a certain way, and I noticed it.  And I don't know how I "fix" it -- well, besides finding a left wrist guard, which I am sure I have somewhere in my storage unit.

It feels better.  It feels OK now.  But what if it doesn't?