PPIB and anemia (phenotype): It is not usual to ask your patient to walk, but in this case that helped the diagnosis. When asked to walk, the patient wobbled and walked with a slapping gait, suggesting a problem with the nerves. Vitamin B-12 deficiency may result in anemia and neurological symptoms. Even though vitamin B-12 is required in minute amounts, problems in its absorption can lead to dire consequences [13].