Neurapraxia is part of Sedon's classification scheme used to classify nerve damage. It is a transient episode of motor paralysis with little or no sensory or autonomic dysfunction. Neurapraxia describes nerve damage in which there is no disruption of the nerve or its sheath. In this case there is an interruption in conduction of the impulse down the nerve fiber, and recovery takes place without true regeneration, as Wallerian degeneration does not occur. This is the mildest form of nerve injury. This is probably a biochemical lesion caused by concussion or shock-like injuries to the fiber. In the case of the role nerve, neurapraxia is brought about by compression or relatively mild, blunt blows, including some low-velocity missile injuries close to the nerve. There is a temporary loss of function which is reversible within hours to months of the injury ( the average is 6-8 weeks ). There is frequently greater involvement of motor than sensory function with autonomic function being retained. This form of nerve-impulse interruption should not be ignored and the patient should refer to a physician as soon as possible. In sports neurapraxia is common and happens to most athletes during their sports life-span. Patients should also refrain from playing sports or putting stress on the injured area. Since sensation of that part of the body will be lost, any further damage or injury done will not be noticed or felt as profoundly as usual, and damage might go unnoticed.