On a scale of 0-10, testicular injuries can be painful on a scale of 9-10. In medical terms, testicular injury is very painful, according to the strength of the hit to make a judgment, the general pain in the 2-3 grade, while the pinch burst is a 10 grade pain. The balls are rich in peripheral nerves and blood vessels, so for men the balls are very fragile, if trauma is likely to cause radioactive pain, that is, the whole body will produce pain, serious nausea and vomiting, and even painful shock, so you men must protect their balls to avoid impact, blow.