Fingers described as numb have often been subjected to a change in sensitivity. Numbness is sometimes described as tingling; this is called paresthesia. However, fingers retain their mobility. The causes may include the side effects of some treatments or neurological diseases, or otherwise directly related to a nerve injury or compression. This is what is frequently the case in paresthesia of the fingers which can result from nerve irritation in the cervical spine by a herniated disc, for example, but also from compression of the median nerve at the wrist: this is carpal tunnel syndrome.