47 下列何種檢查對於多發性硬化症的診斷價值最低？

 誘發電位（evoked potentials） 腦脊髓液

腦波電流圖（EEG） 核磁共振（MRI)

ans EEG

multiple sclerosis

CSF is needed!

Evidence for viruses as a cause includes the presence of oligoclonal bands in the brain and cerebrospinal fluid of most patients, the association of several viruses with human demyelination encephalomyelitis, and induction of demyelination in animals through viral infection.

Magnetic resonance imaging of the brain and spine shows areas of demyelination (lesions or plaques).

The nervous system of a person with MS responds less actively to stimulation of the optic nerve and sensory nerves due to demyelination of such pathways. These brain responses can be examined using visual and sensory evoked potentials.

Multiple sclerosis (abbreviated MS, also known as disseminated sclerosis or encephalomyelitis disseminata) is an inflammatory disease in which the fatty myelinsheaths around the axons of the brain and spinal cord are damaged, leading to demyelination and scarring as well as a broad spectrum of signs and symptoms.^[1]Disease onset usually occurs in young adults, and it is more common in females.^[1] It has a prevalence that ranges between 2 and 150 per 100,000.^[2] MS was first described in 1868 by Jean-Martin Charcot