 
 
About 10 years ago, I was rear-ended and hurt my neck.  Slipped a disk with really bad pain.  Numbness in my fingers.  I was able to treat it successfully with a ####-load of Advil to help with swelling plus PT, which was mostly traction (which felt amazing).  I haven't had a problem since.
A couple of weeks ago, I was playing in the surf with my kids in Puerto Rico.  A big wave slammed me into the sand.  I hand my arms outstretched above my head and landed right on my elbow.  Instant shoulder pain.  I could barely move my arm for a couple days, gradually feeling a little bit better.  Once I got back home, I saw an ortho and he diagnosed me with a contused rotator cuff.  I prescribed me some pain killers and I am slated to start PT tomorrow.
but now, I am starting to get numb in my thumb and the pain in my neck/shoulder reminds me of when I slipped that disk.  I wonder if I may have re-aggravated that old injury.