Vitamin E deficiency
Vitamin E deficiency in humans is a very rare condition, occurring as a consequence of abnormalities in dietary fat absorption or metabolism rather than from a diet low in vitamin E. Collectively the EARs, RDAs, AIs and ULs for vitamin E and other essential nutrients are referred to as Dietary Reference Intakes (DRIs). Vitamin E deficiency can cause nerve problems due to poor conduction of electrical impulses along nerves due to changes in nerve membrane structure and function. Signs and symptoms. Signs of vitamin E deficiency include the following: Causes. Vitamin E deficiency is rare. There are  no records of it from simple lack of vitamin E in a person's diet, but it can arise from physiological abnormalities. It occurs in the people in the following situations: Diagnosis. The U.S. Institute of Medicine defines deficiency as a serum concentration of less than 12 μmol/L. The symptoms can be enough for a diagnosis to be formed. Treatment. Treatment is oral vitamin E supplementation.