Anemia is one of our common clinical manifestations. Although it is not an independent disease, it is one of the most common symptoms in daily life. I often hear patients say, “Doctor I’m dizzy, see if I’m anemic?” “Doctor, my blood pressure is low, see if I am anemic?” As lay people, how can we tell if we are anemic and what is the severity of our anemia? How should we evaluate the efficacy of anemia treatment? Today, we will teach you how to judge anemia and its severity by yourself. If you have symptoms such as dizziness, low blood pressure and pale face, the first thing you should do is to understand your medical history and ask yourself the following questions: 1. A. Whether there is a recent history of bleeding, gastrointestinal diseases or gynecological diseases. For example, black stool or excessive menstruation. B. Whether there is a recent case of insufficient supplementation. For example: excessive under-eating, dieting, partial eating, etc. C. Whether there has been recent exposure to physical factors such as ionizing radiation and radionuclides. D. Whether there has been any recent viral infection. E. Whether there is a family history of blood disorders. F. Whether in pregnancy or lactation, etc. 3. Length of illness: How long have the symptoms been present and have they been relieved? Or is it getting worse? 4. Medication: Have you applied any medication recently? For example, antipyretic and analgesic drugs, anti-infective drugs, etc. Is it a long-term application? Are there any changes in laboratory indicators before and after the use of drugs, etc.? Second, observe the color of the skin and mucous membrane: there is a high degree of reliability. Check your nail bed, mouth and lips, skin and mucous membranes, focusing on the color and the presence of bleeding spots. They are a window to determine whether anemia is present. If your answer to the above question is yes, then you need to go to the hospital to have a blood test to see if you have anemia. Anemia is defined as a lower than normal concentration of hemoglobin, red blood cell count and/or hematocrit in the peripheral blood unit volume of circulating blood. Generally, a hemoglobin amount below the lower 95% of the normal value is used as the diagnostic criterion. Third, then how is the severity of anemia determined according to the indicators? The hemoglobin content of a normal person is: male: 120-160g/L, female: 110-150g/L. According to the different levels of hemoglobin will be divided into: 1. Mild anemia: below the normal reference value and above 90g/L 2. Moderate anemia: 60-90g/L 3. Severe anemia: 30-60g/L 4. Very severe anemia: below 30g/L If there is already anemia, it is necessary to actively seek treatment methods. The principle of treatment is to get rid of the cause of the disease and to treat the pathogenesis of anemia. For example, iron deficiency anemia requires iron supplements, and other treatments include blood transfusions, immunosuppressants, splenectomy, bone marrow transplantation, and other treatments. Fourth, then how should we judge the efficacy of anemia treatment? Effective: the hemoglobin concentration rises at least 15g/L after anti-anemia treatment; Reliable: the hemoglobin concentration rises >20g/L after anti-anemia treatment Cured: the hemoglobin concentration returns to normal, the hemoglobin concentration remains normal for more than 3 months after stopping anti-anemia drugs, and the cause of anemia is completely removed. Learn to judge for yourself whether anemia is present or not and whether the treatment is effective, so that you can have a clear picture in your mind and take less detours in the treatment.