Metabolic and Toxic Myelopathies.

Area of Science:

• Neurology
• Toxicology
• Metabolic Disorders

Background:

• Metabolic and toxic causes of myelopathy represent a diverse group of neurological disorders.
• Understanding their varied presentations, pathophysiology, and outcomes is essential for effective management.

Purpose of the Study:

• To review the causes of metabolic and toxic myelopathies.
• To detail clinical presentation, pathophysiology, diagnostic methods, treatment strategies, and prognosis.

Main Methods:

• Systematic review of metabolic and toxic myelopathies.
• Organization by temporal course (hyperacute, acute, subacute, chronic) and etiology.
• Inclusion of examples like nutritional deficiencies, toxic exposures, and radiation/chemotherapy.

Main Results:

• Myelopathies present with varying onset times, from hyperacute (e.g., neurolathyrism, decompression sickness) to chronic (e.g., Vitamin E deficiency, hepatic myelopathy).
• Specific causes include dietary toxins, drug/chemical exposures (heroin, nitrous oxide, organophosphates), and medical treatments.
• Clinical deficits can stabilize or improve with timely identification and intervention.

Conclusions:

• Metabolic and toxic myelopathies require prompt recognition and management.
• Early diagnosis and treatment are key to improving patient outcomes.
• Familiarity with the spectrum of these disorders is vital for clinicians.