May 13, · of anemia from vitamin B deficiency in adults is caused by pernicious anemia. This type of anemia is called “pernicious” because it was once considered a . When your body can’t make enough healthy red blood cells because it lacks vitamin B, you have pernicious anemia (PA). A long time ago, this disorder was believed to be fatal (“pernicious” means.
Overview. Pernicious anemia is a type of anemia. The term "anemia" usually refers to a condition in which the blood has a lower than normal number of red blood cells. In pernicious anemia, the body can't make enough healthy red blood cells because it doesn't have enough vitamin B Those signs include: Vomiting. General sense of weakness. Inability to sleep. Digestive problems. Lack of appetite, often profound. Failure to develop and thrive. Pale complexion. Rapid heartbeat. Yellow tone to the skin. Mental retardation. Blood protein present in the urine.