Why does my testicle hurt when touched?

Pain in the testicle upon touch is usually due to local inflammation, commonly seen in conditions such as orchitis and epididymitis. Repeated inflammatory stimulation can lead to congestion and swelling of the testicle, resulting in pain. Trauma from external forces, such as contusions, lacerations, or testicular torsion, can also cause pain. Additionally, diseases such as testicular tumors may cause testicular pain, and nodules may be felt upon examination.