vitamin b12 deficiency as in pernicious anemia
Pernicious anemia is one form of vitamin B-12 deficiency that results from the autoimmune process described above. However, other causes of vitamin B-12 deficiency can also produce the same signs and symptoms as pernicious anemia.s discussed previously, true pernicious anemia results from an autoimmune condition that impairs absorption of dietary vitamin B-12, resulting in vitamin B-12 deficiency. Vitamin B-12 deficiency of any cause will result in anemia and neurologic symptoms.