Francis7 posted:Which is worse and is there a clear cut way to differentiate between the two?
A Doctor differentiates the two and I think it doesn't matter which is worse because if you have it you can't change it anyway.
Go to see the doctor if it doesn't go away with a week of rest.
And don't play through severe pain, it could hurt you long term. I know a week off sucks but better than long term damage. Give it a rest (complete rest, no pitching, no lifting , no running or hitting) and then go to the doctor if not better.