Seddon classification There are three distinct classifications and degrees of nerve injury: *Neurotmesis is the most serious degree of nerve injury. It involves the disruption of the nerve and the nerve sheath. *Axonotmesis occurs when the majority of the supporting structures of the nerve are preserved, but disruption of the nerve fibers is still observed. Wallerian degeneration often occurs in the near the proximity of the injury site.<unk>  is least serious form of nerve injury. There are two different forms of mechanical nerve injury involving<unk> . The underlying causes of transient nerve injury typically include a brief ischemic episode or any form of compression. More persistent forms of nerve injury involve demyelination and axonal constriction. In certain circumstances, diagnosing<unk>  can be uncomfortable because of the presence of severe neuropathic pain. Neuropathic pain is an indication that the lesion of the nerve is still in progress. Diagnosis of<unk>  is almost always followed by a quick and complete recovery period.
Neurapraxia
Apperceptive agnosia
Constructional apraxia
Ideomotor apraxia
Visuospatial dysgnosia
Dystrophy
Acrodynia
Dyssynergia