I'm having scrotum pain, what could be the reasons?

Scrotum, testis pain: Scrotum or testicle pain means a trip to the doctor because a testicle's blood supply can be twisted off (torsion). When that happens, the testicle can die. Other causes of testicle pain include trauma, infection, twisting of an appendix of a testicle (a small lump near a testicle), etc. Since one usually cannot tell for sure if his testicle is twisted, he needs an exam by a clinic or ER doctor.