The testicle is attached to the scrotum by the testicular tract, which holds the testicle in the scrotum. After birth, the testicle and the spermatic cord are very mobile. If the testicle and the spermatic cord suddenly encounter force or violent shock, the testicle and the spermatic cord will be twisted to some extent, which is also called spermatic cord torsion. Onset of testicular torsion 1. Sudden onset of severe pain in the abdomen. 2. Severe pain in the testicle. 3. The torsioned testicle appears to be higher in the scrotum than the normal testicle. 4. The child may experience nausea and vomiting. 5.A few hours after the symptoms appear, the scrotum will be red, swollen and painful to touch. The clinical manifestations of testicular torsion are mainly pain and swelling. If it occurs in a pediatric patient, it is often more difficult to diagnose. The pediatric patient will have unexplained anorexia and restlessness, and the condition generally develops more rapidly. Testicular torsion is a relatively uncommon but urgent urological emergency requiring urgent treatment. If the best time for treatment is missed, there is a risk of having the testicle removed. The severity is no less than that of various tumors. To summarize the knowledge about testicular torsion, the main reason is that the tether of the testicle is too long and the testicle is relatively free, like a swing hanging from a cliff. The main time of its onset is in the morning. In the morning, due to morning erection, the testosterone muscle contracts and the tension is high, and during the contraction and diastole of the testosterone muscle, it is easy to twist the tether and thus testicular torsion occurs. The main symptom after testicular torsion is scrotal swelling and pain. It is characterized by sudden scrotal pain, continuous pain, intermittent aggravation, sometimes also inguinal pain (commonly known as the root of the thigh), can also be accompanied by nausea and vomiting, etc. Once the testicular torsion occurs, the testicles will have different degrees of blood supply deficiency depending on the degree of torsion, and over time, necrosis will occur. Because the degree of pain varies from person to person, some people will let their guard down because of this. Testicular torsion is a particularly time-sensitive condition. Irreversible damage to the testicle occurs 2 hours after complete testicular torsion, 6 hours after the testicle begins to appear necrotic, and if it lasts more than 24 hours the testicle is essentially necrotic. Therefore, whenever there is scrotal pain and the pain worsens when the scrotum is held up, there is an urgent need for urological consultation.