I've been playing for decades. Every now and then I do something that causes a fingertip on my fretting hand to be extremely sensitive — to the point where the slightest pressure causes pain. I think I've finally figured out what's going on.
Every time I've had this pain, there's been a slight separation between the finger and the nail - not the entire nail, just that line where the nail separates from the finger moves back a tiny bit. I've resisted this conclusion, because that's not where the pain comes from - it comes from the fingertip! But every time I've had this problem, there has been a little fingernail separation.
So my question is, should I play through this, or wait until the pain goes away?