Metabolic, nutritional, and toxic myelopathies.

This review article identifies and describes the clinical manifestations of various metabolic, nutritional, and toxic conditions that result in symptoms of myelopathy and, in some cases, myeloneuropathy. It includes discussions of the clinical pictures that occur secondary to these causes. Familiarity with the clinical symptoms may lead to accurate diagnosis through laboratory and imaging studies and to treatment with successful identification of the underlying causes.