My 11-year old son tells me he has sharp pain in the center of his scrotum. It is intermittent and has had it for the past four days. The scrotum is normal color and he does not think it is swollen. Hurts more when sitting down. No pain during urination. Seems slightly more sore, but not significantly, after running around. Does not recall a recent injury to his scrotum. Has not been very physically active outside of PE.