Which of the following symptoms may indicate the onset of carpal tunnel syndrome?

• A. Blurred vision
• B. Tingling in fingers
• C. Backache
• D. Headache

Answer: (B)

Tingling in the fingers is a common symptom associated with carpal tunnel syndrome, which occurs when the median nerve is compressed at the wrist. This compression can lead to a variety of sensations in the hand, including numbness, tingling, and pain, particularly in the thumb, index finger, middle finger, and part of the ring finger. The sensation of tingling is often an early warning sign that the nerve is being affected, and if left untreated, it can lead to further complications and loss of function in the hand.

The other symptoms mentioned, such as blurred vision, backache, and headache, are not typically related to carpal tunnel syndrome. Blurred vision can indicate problems related to the eyes or neurological conditions, backaches often relate to spine issues or muscle strain, and headaches may arise from tension, dehydration, or other medical conditions. These symptoms do not reflect the nerve compression phenomenon found in carpal tunnel syndrome, making tingling in the fingers the most relevant indicator in this context.