Demyelination is a condition in which the myelin sheath of the neurospinal cord becomes damaged and neurons as well as axons are relatively involved, which can manifest in clinical symptoms. If multiple sclerosis occurs and the lesions are multiple and gradually recurring, symptoms of acute disseminated encephalomyelitis, i.e., convulsions, generalized aches and pains, hemiparesis, hemianopia, and ataxia, may occur. Acute inflammatory demyelinating polyneuropathy may also occur, and patients may experience paralysis of the respiratory muscles, decreased muscle tone, paralysis, and significant sensory disturbances such as sock-like or glove-like sensations. Others may develop chronic inflammatory demyelinating polyneuropathy, which is diagnosed by neurological examination and then treated systematically.