Testicular torsion occurs when the spermatic cord (from which the testicle is suspended) twists, cutting off the testicle's blood supply. The most common symptom in children is rapid onset of severe testicular pain. The testicle may also be higher than usual and vomiting may occur. In newborns pain is often absent and instead the scrotum may become discolored or a testicle may disappear from its usual place.