The Neurologic Syndrome of Vitamin E Deficiency: Laboratory and Electrophysiologic Assessment.

A human requirement for vitamin E was established in the 1960s; however, its role in neurologic function has been recognized only for the past 10 years. The neurologic syndrome of vitamin E deficiency is seen in patients with chronic steatorrhea and principally affects functions of the spinal cord posterior column and retina; however, it can also involve other parts of both the central and peripheral nervous system and the proximal muscles. This review examines the clinical and laboratory assessment of patients suspected of having vitamin E deficiency and points out the importance of recognizing the syndrome since many of the incapacitating symptoms are largely reversible.