What causes anemia?

Anemia has many causes and complicated mechanisms. Common reasons are as follows:

1, hemorrhagic anemia: such as menorrhagia and gastrointestinal bleeding;

2. Hemolytic anemia: anemia caused by the destruction of red blood cells. There are many reasons for anemia caused by hemolysis, such as extravascular and intravascular reasons and reasons related to immunity and infection;

3, bone marrow causes: anemia caused by bone marrow hematopoietic disorders, such as various diseases originating from bone marrow can lead to anemia. Bone marrow is the main organ for hematopoiesis. If the patient suffers from malnutrition, iron deficiency, folic acid or vitamin B 12, the bone marrow will not be able to make blood.

Therefore, if anemia is found, it is necessary to find out the reasons from the above three aspects to determine whether the patient has a history of chronic blood loss, and judge whether the patient is acute hemolysis through acute jaundice, anemia, elevated reticulocyte and elevated lactate dehydrogenase. Although the pathogenesis of different anemia is different, the symptoms of patients are similar, such as dizziness, fatigue, loss of appetite, palpitation, chest tightness and so on. Patients with moderate and severe anemia need early intervention and treatment, so once anemia is found, it is necessary to see a doctor as soon as possible, and it is the right choice to check and judge the reasons through doctors and carry out targeted treatment.