There is a tunnel in the wrist called the carpal (wrist) tunnel. Nine tendons and the median nerve, pass through it. When pressure builds up in the tunnel, the nerve gets squeezed and is unable to function properly. This may result in numbness, discomfort and pain in the fingers.
There is usually pain, numbness or a tingling sensation, or a combination of these three sensations in your hand and fingers.
An accurate history and examination is usually sufficient to make a diagnosis. You may need to go for an X-ray if, an underlying bone problem is suspected. Your doctor may order a nerve test, called EMG, to confirm an abnormality of the nerve.