Megaloblastic Anemia
Type: Symptom
Definition
The presence of abnormally large, structurally immature, and dysfunctional red blood cells in the circulation.
Clinical Details
Vitamin B12 is absolutely essential for the precise DNA synthesis required during normal cellular division within the bone marrow. Without it, the precursor red blood cells physically swell but fail to properly divide, entering the bloodstream as massive, inefficient oxygen carriers. This profound lack of oxygen delivery causes severe systemic weakness, dizziness, and a visibly pale complexion.