Testicular pain in teenagers may be caused by trauma, excessive masturbation, orchitis, varicocele, syringomyelia and so on. 1. Trauma: pressure on the testicles can cause testicular pain when playing sports or sleeping in an incorrect position. 2. Excessive masturbation: teenagers are too obsessed with sex and masturbate, excessive masturbation can lead to testicular pain. 3. Orchitis: testicles are infected by bacteria, mycoplasma and other pathogens, causing local tissue congestion, edema, resulting in testicular pain, high fever and other symptoms. 4. Varicocele: the veins in the spermatic cord are abnormally dilated and tortuous, resulting in obstruction of blood return and causing testicular pain. 5. Syringomyelia: the accumulation of fluid in the syringomyelia cavity exceeds the normal amount, the imbalance between secretion and absorption, the internal pressure increases, affecting the blood flow to the testicles and causing testicular pain. There may be other reasons for testicular pain in teenagers, it is recommended to consult a doctor in time to find out the cause of the disease and follow the doctor’s instructions for treatment.