Which of the following is a sign of carpal tunnel syndrome?

Carpal tunnel syndrome is characterized by compression of the median nerve as it passes through the carpal tunnel in the wrist. One of the hallmark signs of this condition is tingling or numbness in the fingers, particularly in the thumb, index, middle, and part of the ring fingers. This sensation often occurs because the median nerve, which is responsible for sensation in these fingers, becomes irritated or compressed.

The presence of tingling is significant as it indicates that the nerve is not functioning properly due to pressure, leading to this abnormal sensation. Individuals may also experience weakness in grip or difficulty in performing fine motor tasks, but the tingling sensation is a primary indicator of carpal tunnel syndrome. This symptom tends to be worse at night or after activities that involve repetitive wrist motions, which are common in work settings that require prolonged use of the hands and wrists.