Testicular torsion is a medical condition that occurs when the spermatic cord, which supplies blood to the testicle, twists and cuts off its blood supply. This can lead to severe pain and swelling in the affected testicle. It is considered a medical emergency and requires immediate treatment to prevent permanent damage. The condition often affects males between the ages of 12 and 18, but it can occur at any age. Symptoms may include sudden, severe pain in one testicle, nausea, and vomiting. Prompt diagnosis and surgical intervention are crucial to restore blood flow and save the testicle.