Health Information

Hematology and Blood Disorders

  • Acute Lymphocytic Leukemia (ALL): Symptoms

    Detailed information on acute lymphocytic leukemia, including symptoms, diagnosis, and treatment

  • Acute Myeloid Leukemia (AML): Symptoms

    Detailed information on acute myelogenous leukemia, including symptoms, diagnosis, and treatment

  • Alpha Thalassemia

    Thalassemia is an inherited blood disorder. It is passed down from one or both parents through their genes. There are two main types of thalassemia: alpha and beta. Different genes are affected for each type. Thalassemia can cause mild or severe anemia.

  • Aplastic Anemia

    Aplastic anemia occurs when your bone marrow doesn’t make enough red and white blood cells, and platelets.

  • Hemolytic Anemia

    Hemolytic anemia is a disorder in which red blood cells are destroyed faster than they are made.

  • Iron-Deficiency Anemia

    The most common cause of anemia is a lack of iron. This is called iron deficiency.

  • Anemia Overview

    Anemia is a common blood disorder. It occurs when you have fewer red blood cells than normal, or not enough hemoglobin in your blood. When you have anemia, your blood can’t carry enough oxygen to your body. Without enough oxygen, your body can’t work as well as it should.

  • Anemias

    Detailed information on the different types of anemia, including aplastic anemia, anemia of folate deficiency, glucose-6-phosphate dehydrogenase deficiency, hemolytic anemia, iron deficiency anemia, megaloblastic anemia, and sickle cell disease

  • Vitamin B12 Deficiency Anemia

    Vitamin B12 deficiency anemia is a condition in which your body does not have enough healthy red blood cells, due to a lack (deficiency) of vitamin B12. This vitamin is needed to make red blood cells, which carry oxygen to all parts of your body.

  • Beta Thalassemia

    Thalassemia is an inherited blood disorder that is passed down through the parent’s genes. It affects how hemoglobin is made. Hemoglobin is an iron-rich protein in red blood cells. It carries oxygen to all the parts of the body. There are two main types of thalassemia: alpha and beta. Thalassemia can cause mild or severe anemia.

  • Bleeding / Clotting Disorders

    Detailed information on bleeding/clotting disorders, including hemophilia, idiopathic thrombocytopenic purpura, and thrombosis

  • Facts About Blood

    Detailed information on blood, including components of blood, functions of blood cells and common hematology tests.

  • Blood Donations/Blood Banking

    Detailed information on blood donations and blood banking

  • Blood Disorders

    Detailed information on the most common blood disorders, including hemochromatosis, polycythemia vera, thrombocythemia, leukemia, and lymphoma

  • Bone Marrow Transplantation

    Detailed information on bone marrow transplant, including preparation, types of transplant, transplant team, and possible procedure-related complications or side effects

  • Chronic Lymphocytic Leukemia

    Detailed information on chronic lymphocytic leukemia, including symptoms, diagnosis, and treatment

  • Chronic Myeloid Leukemia (CML): Symptoms

    Detailed information on chronic myelogenous leukemia, including symptoms, diagnosis, and treatment

  • Folate-Deficiency Anemia

    Folate deficiency is the lack of folic acid in the blood. Folic acid is a B vitamin needed to make normal red blood cells. Low levels can cause megaloblastic anemia.

  • G6PD Deficiency

    G6PD deficiency is an inherited condition. It is when the body doesn’t have enough of an enzyme called G6PD (glucose-6-phosphate dehydrogenase). This enzyme helps red blood cells work properly. A lack of this enzyme can cause hemolytic anemia. This is when the red blood cells break down faster than they are made.

  • Hereditary Hemochromatosis

    Hereditary hemochromatosis is one of the most common genetic disorders in the U.S. Itcauses your body to absorb too much iron from the food you eat.

  • Home Page - Hematology and Blood Disorders

    Detailed information on hematology and blood disorders

  • Immune Thrombocytopenic Purpura

    Immune thrombocytopenic purpura (ITP) is a blood disorder. With this disease, you have a lower amount of platelets than normal in your blood. Platelets are blood cell fragments that help with blood clotting. Having fewer platelets can cause easy bruising, bleeding gums, and internal bleeding.

  • Leukemia Index

    Detailed information on leukemia in childhood, including symptoms, staging, diagnosis, and treatment

  • Lymphomas

    Detailed information on lymphomas, including Hodgkin's lymphoma and non-Hodgkin's lymphoma

  • Online Resources - Hematology and Blood Disorders

    List of online resources to find additional information on blood disorders

  • Sickle Cell Disease

    Sickle cell disease (SCD) is an inherited blood disorder that causes the body to make abnormal hemoglobin. This is the protein in red blood cells that carries oxygen to all parts of your body. The damaged red blood cells block blood flow in small blood vessels. This causes pain and can damage major organs.

  • Topic Index - Hematology and Blood Disorders

    Detailed information about hematology and blood disorders, including blood donations, blood banking, blood transfusion, bone marrow transplantation, aplastic anemia, anemia of folate deficiency, glucose-6-phosphate dehydrogenase deficiency, hemolytic anem

  • Thalassemias

    Detailed information on thalassemias, including alpha thalassemia, beta thalassemia (Cooley's anemia)

  • Thrombocythemia

    Thrombocythemia is a disease in which your bone marrow makes too many platelets. Platelets are blood cell fragments that help with blood clotting. Having too many platelets makes it hard for your blood to clot normally. This can cause too much clotting, or not enough clotting.

  • Thrombosis

    Thrombosis occurs when blood clots block your blood vessels. It may be caused by injury, immobility and other factors.

  • Blood Transfusions

    A blood transfusion is a procedure in which you receive blood or parts of blood through an IV (intravenous) line.

  • Polycythemia Vera

    Polycythemia vera is a rare blood disorder in which there is an increase in all blood cells, particularly red blood cells. The increase in blood cells makes your blood thicker. This can lead to strokes or tissue and organ damage.

  • Hemophilia in Children

    Hemophilia is an inherited bleeding disorder. Children with hemophilia can’t stop bleeding because they don’t have enough clotting factor in their blood. Clotting factors are needed for blood to clot. Blood clots to prevent excessive bleeding.

  • Hemophagocytic Lymphohistiocystosis

    If you have hemophagocytic lymphohistiocytosis, your immune system does not work normally. Certain white blood cells — histiocytes and lymphocytes — attack your other blood cells. These abnormal blood cells accumulate in your spleen and liver, causing these organs to enlarge.