Testicular torsion occurs when the testicle rotates on the spermatic cord, cutting off blood flow. If not treated promptly, this can damage the testicle. It is often caused by injury, infection, or an anatomical abnormality. Symptoms include pain or swelling in the testicle. Diagnosis involves physical exam, ultrasound, and blood tests. Treatment may involve antibiotics, anti-inflammatories, surgery to restore blood flow, or removing the testicle if damage is severe. Nurses educate patients on rest, diet, supportive underwear, and avoiding sexual activity during recovery.