The testicles are the organs in the scrotum, so testicular skin pain should refer to scrotal skin pain. There are many reasons for patients to have scrotal skin pain, mainly including the following: 1. It may be caused by suffering from orchitis, which is an infectious inflammatory disease with a high incidence. The actual fact is that you can find a lot of people who are not able to get a good deal on this kind of things. 2, it may also be due to the fact that the patient has chronic prostatitis. The actual scrotum is often moist, and long-term moist will lead to inflammation of the scrotal skin, sensitive to pain, and will feel pain when rubbing with underwear. 3, may be caused by trauma to the scrotum resulting in skin damage, which is usually related to collisions, violence, car accidents and other accidents. 4, may be caused by scrotal skin allergy pain, the patient may be allergic to underwear and other clothing. 5, scrotal sebaceous glands and sweat gland ducts are not smooth leading to infection and inflammation, which can also cause skin pain, these are the causes of testicular skin pain.