With torsion is there a chain of events testicular pain?

Torsion causes pain.: Testicular torsion is caused by twisting of the spermatic cord, which interrupts the blood supply to the testis. Loss of blood supply can lead to ischemia of he organ, which is incredibly painful. A common contributor is an anatomic defect called the bell-clapper deformity, where the additional mobility of the testicle predisposes it to twisting. A larger testicle is also a risk factor.