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[Acute disseminated encephalomyelitis (ADEM)].

S Schwarz1, M Knauth, A Mohr

  • 1Neurologische Universitätsklinik, Im Neuenheimer Feld 400, 69120 Heidelberg. stefan_schwarz@med.uni-heidelberg.de

Der Nervenarzt
|April 26, 2001
PubMed
Summary

Acute disseminated encephalomyelitis (ADEM) is a rare CNS demyelinating disease often following infection or vaccination. While symptoms vary, ADEM typically shows a monophasic course and good prognosis, unlike MS.

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Area of Science:

  • Neurology
  • Immunology
  • Demyelinating Diseases

Background:

  • Acute disseminated encephalomyelitis (ADEM) is an uncommon CNS demyelinating disorder.
  • It can be triggered by preceding infections or vaccinations, or occur spontaneously.

Observation:

  • Clinical presentations of ADEM are highly variable.
  • Cerebrospinal fluid (CSF) analysis may show lymphocytic pleocytosis and elevated protein, but can also be normal.
  • MRI reveals solitary or multiple CNS lesions.

Findings:

  • Methylprednisolone is the primary treatment, with immunoglobulin, plasmapheresis, or cytostatic drugs as alternatives.
  • ADEM generally follows a monophasic course with a favorable long-term prognosis, contrasting with multiple sclerosis (MS).
  • Distinguishing ADEM from MS during the acute phase is challenging due to overlapping features.

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Implications:

  • ADEM may represent a variant of MS rather than a distinct entity.
  • Understanding ADEM's relationship with MS is crucial for accurate diagnosis and treatment.
  • Further research is needed to establish definitive diagnostic criteria differentiating ADEM from MS.