About 9 clinical cases of neurological deficiency diseases, a brief critical review of the problem is made and insists the nosological unity of Deficiency neuropathies, which are classified in the following clinical forms: polineuríticas, mielósicas lifts, predominantly meso encephalopathic -diencefálicas and mixed forms. Nervous disorders are not directly related to hematological or gastrointestinal disorders, they all depend on a complex etiopathogenic deficiency, which requires a comprehensive treatment approach.

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