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What is Acute disseminated encephalomyelitis (ADEM) is a white matter disease that is indistinguishable from multiple sclerosis by all except and explain in detail?
ADEM is a demyelinating disease of the brain ,brainstem and spinal cord that is indistinguishable from MS on MRI. However,it is monophasic,  that is  it occurs acutely on a single occasion and not in a recurrent fashion like MS.