What is a common sign of testicular torsion?

A common sign of testicular torsion is the absence of the cremaster reflex. This reflex is a protective mechanism that allows the scrotum to contract and retract the testicles in response to cold or other stimuli. When testicular torsion occurs, blood supply to the affected testis becomes compromised, and the reflex is lost. This indicates that the physiological response is not functioning normally due to the underlying condition of torsion.

In the context of testicular torsion, the other signs mentioned do not typically align with the acute presentation. Increased urination may be associated with urinary tract issues rather than torsion. Chronic pain is not characteristic of torsion, as this condition usually presents with sudden and severe pain. Enlarged lymph nodes are more indicative of infection or inflammatory processes rather than the acute vascular event that occurs in testicular torsion. Thus, absent cremaster reflex serves as a key clinical sign in diagnosing this urgent condition.