[Chronic polyneuropathy due to vitamin E deficiency].

Vitamin E deficiency has been implicated as a causal factor in neurological disease for some time. Nevertheless, only in the last 10 years have we begun to understand the role this vitamin plays in the normal functioning and structure of the nervous system. Chronic fat malabsorption syndromes are the most common causes of low levels of this highly fat-soluble vitamin. We present a case of chronic polyneuropathy due to vitamin E deficiency caused by malabsorption in which a biliary-cholonic fistula was present. Plasma tocopherol levels were normalized by parenteral substitution, leading to substantial clinical improvement. We suggest that vitamin E levels be determined in cases of digestive disorders involving malabsorption of fats and in chronic neurological diseases, particularly spinal-cerebral degenerative and polyneuropathic diseases that are mainly sensory or motor-sensory in nature, given the potential reversibility of these disorders when caused by vitamin E deficiency.