Patient's question:
Sometimes, after squatting and immediately standing up, I feel extremely dizzy. My friend said I might be anemic, so I was wondering what types of anemia there are?Doctor's answer:
Hemorrhagic anemia is caused by excessive blood loss due to open wounds, and excessive blood loss naturally leads to anemia. A harsh environment for hematopoietic stem cells affects their function, while a insufficient number of hematopoietic stem cells also impairs blood replenishment. Functional defects in hematopoietic stem cells similarly hinder the efficiency of blood production. All of these factors can lead to anemia. Anemia is classified as either acute or chronic anemia. Based on red blood cell morphology and size, it can be divided into macrocytic anemia, microcytic hypochromic anemia, and normocytic anemia.