Signs and symptoms of testicular torsion include: 
Sudden, severe pain in the scrotum — the loose bag of skin under your penis that contains the testicles
Swelling of the scrotum
Abdominal pain
Nausea and vomiting
A testicle that's positioned higher than normal or at an unusual angle
Frequent urination
Fever
 Young boys who have testicular torsion typically wake up due to scrotal pain in the middle of the night or early in the morning.