What Causes Testicular Pain?
Among males, a common symptom is testicular pain. Causes of testicular pain include testicular torsion, scrotal edema, and varicocele.
① Testicular Torsion
Testicular torsion occurs when the testicle rotates abnormally due to external force, potentially causing pain. It most commonly affects children. Patients typically experience sudden, severe unilateral pain, swelling, and tenderness of the scrotum. In severe cases, nausea and vomiting may also occur. Surgical intervention is usually required.

② Scrotal Edema
Accumulation of fluid around the testicle and surrounding tissues—when fluid volume becomes imbalanced—can lead to scrotal edema and associated testicular pain. If such symptoms are observed, prompt medical evaluation is essential to identify the underlying cause; surgical treatment may be necessary in some cases.
③ Varicocele
Varicocele—dilation and tortuosity of the veins within the spermatic cord—may cause testicular pain, along with scrotal enlargement and localized discomfort. Symptoms often worsen after prolonged sitting.