The symptoms of varicocele vary depending on the severity of the patient's condition. Clinically, most varicocele patients have no obvious symptoms or no symptoms at all, and varicocele is often discovered during physical examinations. A small percentage of varicocele patients exhibit noticeable symptoms. The primary symptom is a feeling of heaviness or discomfort in the testicles, especially after prolonged walking or standing. The pain becomes more pronounced, but it will decrease or even disappear after lying down and resting. Some varicocele patients may not show symptoms but present with infertility. Varicocele is then discovered through physical examinations or related medical tests.