My 10 year old son was hit in his right testicle last week and he is swollen and red and sore when walking?

Testicle trauma: He should be evaluated with an ultrasound to make sure that he does not have a torsion of the testicle. Otherwise cold compresses might help to reduce the swelling and pain an athletic supporter might also be helpful.

Testes Injury: Your son needs to see a doctor and get a scrotal ultrasound to check for possible testes injury. I advise this now.