What is one sign of carpal tunnel syndrome seen during a physical exam?

A positive Phalen's sign is a key indicator of carpal tunnel syndrome and is recognized as one of the classic diagnostic maneuvers used during a physical exam. This test involves having the patient flex their wrists by putting the backs of their hands together for about 60 seconds. If this maneuver elicits numbness, tingling, or discomfort in the area of the median nerve distribution (primarily the thumb, index, middle, and a portion of the ring finger), it is considered a positive result. This response indicates the presence of median nerve compression within the carpal tunnel, which is a hallmark of carpal tunnel syndrome.

Other physical exam findings may also suggest carpal tunnel syndrome, but the positive Phalen's sign specifically tests for the repetitive flexion of the wrist that exacerbates symptoms. Understanding this test's relevance is important for the diagnosis and management of the condition.