Can anemia cause headaches?

Written by Li Fang Fang

Hematology

Updated on April 24, 2025

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Anemia can cause headaches because when anemia occurs, the entire body is in a state of ischemia and hypoxia. The severity of anemia varies, and so does the extent of ischemia and hypoxia in the body. When anemia is severe, the body is in a significantly compromised state of ischemia and hypoxia. Ischemia and hypoxia in the nervous system can manifest as headaches. Additionally, symptoms can include a feeling of heavy-headedness, and even cerebral infarction, which are caused by anemia. After correcting the anemia by transfusing red blood cells, the headaches will alleviate.

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Written by Li Fang Fang

Hematology

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How is anemia treated?

For any type of anemia, if the anemia is severe, there is a need for active transfusion of red blood cells to correct the anemia. However, anemia can reoccur after transfusion of red blood cells, and it is not a long-term solution. Therefore, after correcting anemia with red blood cell transfusion, it is still necessary to diagnose the specific cause of the anemia and treat it accordingly. For example, patients with iron deficiency anemia need iron supplementation, those with megaloblastic anemia need to be supplemented with folic acid and vitamin B12, and patients with acute blood loss anemia need to find the source of bleeding and receive hemostatic treatment. Anemia caused by malignant hematological disorders like acute leukemia or myelodysplastic syndromes requires anti-tumor treatment.

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How should pregnant women supplement for anemia?

Under normal circumstances, if anemia symptoms are confirmed after pregnancy, further examination is still necessary for active symptomatic treatment. Normally, the specific cause of the anemia can be identified, whether it is due to iron deficiency, folate deficiency, or B12 deficiency. According to the specific cause of anemia, oral medication can be administered for symptomatic treatment, which can effectively alleviate the symptoms. After taking oral medication, it is also necessary to regularly check the rise in hemoglobin levels to properly manage the condition.

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Iron deficiency anemia is a type of anemia.

Anemia is a condition in which the total volume of red blood cells in the circulating blood is reduced below the normal value. Iron deficiency anemia belongs to a category of anemia caused by a lack of hematopoietic raw materials. It occurs when the body's stored iron is depleted and cannot meet the needs for normal red blood cell production. Iron deficiency anemia is a common disease among red blood cell disorders and is categorized under anemias caused by a deficiency in hematopoietic raw materials.

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Hematology

58sec

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How to check for anemia?

Anemia requires an initial routine blood test, which is a complete blood count. If it indicates a reduction in red blood cell count and a significant decrease in hemoglobin, it suggests anemia. Once anemia is indicated by the complete blood count, further tests are guided by the size of the red blood cell volume. If it is microcytic anemia, common types include iron deficiency anemia and anemia of chronic disease, and tests such as serum iron, ferritin, and tumor markers are needed. If it is normocytic anemia, a bone marrow biopsy is required to rule out aplastic anemia, multiple myeloma, etc. If it is macrocytic anemia, tests for folate and vitamin B12 are needed to exclude myelodysplastic syndrome and megaloblastic anemia, among others.

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Written by Gong Hui

Pediatrics

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How to supplement baby's anemia?

The treatment for childhood anemia primarily focuses on addressing the underlying cause. Nutritional anemia is the most common type of anemia in children, which includes iron-deficiency anemia and megaloblastic anemia. For iron-deficiency anemia, the main treatment is iron supplementation. This can be done through dietary means, such as increasing the intake of foods high in iron like pork liver and egg yolks. Additionally, treatment should address any underlying causes of iron deficiency. For instance, if parasitic infections are causing blood loss, then treating the parasitic infection is necessary. If the anemia is due to poor dietary habits or picky eating, then changing these habits is crucial. If general treatments are ineffective, then oral iron supplements should be considered. In the case of megaloblastic anemia, it is important to address the vitamin deficiencies that cause it, namely the lack of folate and vitamin B12. Supplementation of folate and vitamin B12 is recommended.