Why am I having pain on left testicle?

There are a few different things that might cause pain in your left testicle. One possibility is testicular torsion—a condition where the cord that supplies blood to the testicle becomes twisted, causing pain. Even when blood flow appears normal on examination, a twist may still be present, making immediate medical evaluation essential. Another common reason, especially on the left side, is varicocele. This condition occurs when veins in the scrotum enlarge, causing a dull, aching pain that often worsens over time. Epididymitis, an inflammation of the tube that stores and carries sperm, can also cause left-sided testicular pain, usually accompanied by swelling and tenderness. This condition often develops gradually and may be caused by infection or other inflammatory conditions. Physical trauma to the testicle, such as from sports injuries or accidents, can also cause acute pain and should be evaluated promptly. Kidney stones passing through the ureter can sometimes cause pain that radiates to the testicle area, though this is usually accompanied by other symptoms like back pain and difficulty urinating. Another possible cause is chronic orchalgia—ongoing testicular pain that can result from past injuries, inflammation, or nerve problems. If you're experiencing testicular pain and want to better understand what might be causing your symptoms, try our free AI symptom checker to help identify possible conditions before speaking with a healthcare professional about the best treatment options for you.