What is a common symptom of carpal tunnel syndrome?

Tingling or numbness in the thumb and first two fingers is a hallmark symptom of carpal tunnel syndrome. This condition occurs when the median nerve, which runs from the forearm into the palm of the hand, becomes compressed as it travels through the carpal tunnel in the wrist. The median nerve supplies sensation to the thumb, index finger, middle finger, and part of the ring finger, which is why these areas are most affected. Patients often report experiencing a "pins and needles" sensation or loss of sensation in these specific fingers, particularly when engaging in activities that involve repetitive wrist motion or prolonged pressure on the wrist.

While pain in the wrist can also be associated with carpal tunnel syndrome, it does not specifically reflect the characteristic nerve symptoms that define the condition. Swelling of the fingers is not typically a symptom of carpal tunnel syndrome, as this condition primarily involves nerve compression rather than fluid retention or inflammation. Reduced range of motion in the shoulder is unrelated since carpal tunnel syndrome is localized to the wrist and hand rather than affecting the shoulder joints or muscles.