My 12 year old boy has complained of testicular pain. he says that it starts at night but is usually gone by the morning. it has happened 2 days in a row. what should i do?

Need observation: From your information , he may have potential to develop torsion of testis, take to his pediatrician to check him , doppler blood flow will be normal as there is no torsion , at the time of examination , some times will need minor preventive surgery to fix testis to scrotum

Can be a normal find: Most of the time this is due to rapid growth of the testicles that occurs with puberty...So called "growing pains". Any severe pain in the testes needs to be investigated immediately with a doppler ultrasound to rule out testicular torsion. Of course if he is sexually active, std's need to be ruled out with culture.

Have him checked: Intermittent nature of his testicular pain is inconsistent with testicular torsion, an medical emergency. Epididymitis can cause pain over scrotum and is seen without std.

Intermittent torsion: Is a possibility. Early puberty is most common age to develop testis torsion because testice size increases disproportionately to spermatic cord in early puberty. Ask son if testis higher in scrotum at time of pain. Intermittent torsion can become an emergency if testis remains twisted & no longer intermittent. Pain might also be from venous congestion &/or due to an erection without ejaculation.