It maybe 3 things 1- maybe a std 2- maybe to ruff in bed 3- or the tendons are crossing each other in two cases he should go and ask a doctor I was a paramedic and have herd of these 3 different things it may be
What Is The Cause For Aching Scrotum Sac?
He may want to get checked I don't want to scare you but he needs to got check to rule out cancer
My sons father has gone through this and my b/f now goes through this on occasion.