Myélopathies inflammatoires

Acute inflammatory myelopathy, also named acute myelitis (AM), is a rare and etiologically heterogeneous syndrome. Diagnostic criteria are based on clinical, radiological and biological features that lead to classify myelitis into distinct subgroups: acute transverse myelitis, acute partial myelitis and longitudinally extensive acute transverse myelitis. Recent identification of aquaporin-4 antibodies have helped enable early identification of patients with neuromyelitis optica-associated myelitis. However, etiology remains unknown in a substantial portion of AM cases. Despite the absence of evidence, management of an acute episode of AM is currently based on high-dose intravenous methylprednisolone.