What is the definition or description of: nerve damage?

A : A complete nerve transection will leave an area totally numb. The distribution of the numbers depends upon where the nerve was cut. A partial nerve injury may leave the area tingly or incompletely numb. Finally even if the nerve is not cut the swelling and bruising to the tea can affect the nerve as well. Usually we consider sharp penetrating injuries as likely having nerve lacerations when sensation is lost. A hand surgeon can examine the hand and pinpoint the site or extent of nerve injury and recommend surgical repair if needed.

Many things: Anything that causes injury to nerves can lead to nerve damage. Vitamin deficiency, neurological problems, vascular insufficiency, diabetes, and anatomical problems can all cause damage.