The condition of having a lower-than-normal number of red blood cells or quantity of hemoglobin. Anemia diminishes the capacity of the blood to carry oxygen. Patients with anemia may feel tired, fatigue easily, appear pale, develop palpitations, and become short of breath. Children with chronic anemia are prone to infections and learning problems. [..]

A blood disorder caused by a lack of vitamin B12. Patients who have this disorder do not produce the substance in the stomach that allows the body to absorb vitamin B12. This substance is called intrinsic factor (IF). Addison anemia, better known today as pernicious anemia (PA), is characterized by the presence in the blood of large, immature, nucl [..]

Anemia due to failure of the bone marrow to produce red and white blood cells as well as platelets. Aplastic anemia frequently occurs without a known cause. Known causes include exposure to chemicals (for example, benzene, toluene in glues, insecticides, solvents), drugs (for example, chemotherapy drugs, gold, seizure medications, antibiotics), vir [..]

A blood disorder caused by a lack of vitamin B12. Patients who have this disorder do not produce the substance in the stomach that allows the body to absorb vitamin B12. This substance is called intrinsic factor (IF). Biermer's anemia, better known as pernicious anemia (PA), is characterized by the presence in the blood of large, immature, nuc [..]

See: Congenital anemia.

Better known today as thalassemia (or as beta thalassemia or thalassemia major). The clinical picture of this important type of anemia was first described in 1925 by the pediatrician Thomas Benton Cooley. Another name for the disease is Mediterranean anemia. The name thalassemia was coined by the Nobel Prize winning pathologist George Whipple and t [..]

A rare, inherited disease that adversely affects all the elements of bone marrow and is associated with malformations of the heart, kidney, and limbs, as well as pigmentary changes of the skin. Fanconi anemia predisposes a person to cancer, particularly to a disturbance of bone marrow growth called myelodysplasia and to acute myeloid leukemia. Pati [..]

Anemia due to inadequate iron. Iron is necessary to make hemoglobin, the molecule in red blood cells that is responsible for the transport of oxygen. In iron deficiency anemia, the red cells are small and pale. Characteristic features of iron deficiency anemia in children include failure to thrive and increased infections. Iron deficiency anemia ca [..]

Better known today as thalassemia (or as beta thalassemia or thalassemia major). The clinical picture of this important type of anemia was first described in 1925 by the pediatrician Thomas Benton Cooley. The name thalassemia was coined by the Nobel Prize winning pathologist George Whipple and the professor of pediatrics Wm Bradford at U. of Roches [..]

Low red blood cell count caused by inadequate vitamin B12. Abbreviated PA. Patients with PA do not produce intrinsic factor (IF), a substance that allows the body to absorb vitamin B12 from foods. The resulting inadequacy of vitamin B12 hampers the production of red blood cells. PA can be treated by injection of vitamin B12: oral administration wil [..]

Anemia that is unresponsive to treatment.

A genetic blood disorder caused by the presence of an abnormal form of hemoglobin. These hemoglobin molecules tend to aggregate after unloading oxygen forming long, rod-like strictures that force the red cells to assume a sickle shape. Unlike normal red cells, which are usually smooth and malleable, the sickle red cells cannot squeeze through small [..]

A condition in which the number of red blood cells is below normal.

Condition in which there is a reduction in the number of red blood cells or amount of hemoglobin per unit volume of blood below the reference interval for a similar individual of the species under con [..]

A condition of the blood in which normal red blood cell counts or hemoglobin are lacking.

A condition in which too few red blood cells are in the bloodstream, resulting in insufficient oxygen to tissues and organs. For additional information see the Anemia page.

alternative (chiefly U.S.) spelling of anaemia (q.v.). See ae. As a genus of plants, Modern Latin, from Greek aneimon "unclad," from privative prefix an- (see an- (1)) + eima "a dress, [..]

A lower than normal number of red blood cells.

An anemia caused by reduced ability to absorb vitamin B12 from the intestinal tract due to inability to secrete intrinsic factor from the stomach.

A decrease in the number of red blood cells, or, less than the normal quantity of hemoglobin (found in red blood cells) in the blood.

bloodlessness, lack of blood

n. Deficiency of blood or red corpuscles.

A condition in which the number of red blood cells is below normal.

This is where you have too few red blood cells. Healthy red blood cells carry oxygen throughout the body. If the blood is low on red blood cells, the body does not get enough oxygen. People with anemia may be tired and pale and may feel their heartbeat change. Anemia is common in people with chronic kidney disease or those on dialysis.

when the amount of red blood cells or hemoglobin (the substance in the blood that carries oxygen to organs) becomes reduced, causing fatigue that can be severe.

(uh-NEE-mee-uh) a condition in which the number of red blood cells is less than normal, resulting in less oxygen being carried to the body's cells.

Anemia is a medical condition in which a person has a lower than normal number of red blood cells in the blood, usually measured by a decrease in the amount of hemoglobin. Hemoglobin is the red pigmen [..]

a condition in which the hemoglobin concentration is lower than normal due to disease or as the result of a deficiency of one or more nutrients, such as iron.

(n) a deficiency of red blood cells(n) a lack of vitality(n) genus of terrestrial or lithophytic ferns having pinnatifid fronds; chiefly of tropical America

Anemia is a condition in which the body does not have enough healthy red blood cells. Red blood cells provide oxygen to body tissues. Possible causes of anemia include: Long-term (chronic) diseases su [..]

A decreased ability of the blood to carry oxygen because of a reduction in either the number or quality of the red blood cells.

Having a lower than normal amount of red blood cells or hemoglobin (an oxygen-carrying protein inside red blood cells), leading to low energy, weakness, and other symptoms.

"not enough" red blood cells or hemoglobin (RBC < 3.80 x 106 or HGB < 12.0 g/dL for women); many things can cause anemia and chemotherapy is definitely one of them; symptoms can include fatigue, tachychardia (fast heartbeat), paleness, dizziness, and shortness of breath; treatment for mild anemia can include weekly subcutaneous inje [..]

A condition in which a decreased number of red blood cells may cause symptoms including tiredness, shortness of breath, and weakness.

weakness, fatigue, and paleness resulting from a deficiency of red Blood cells or insufficient amounts of hemoglobin molecules within the red cells. 

A condition caused by a reduction in the amount of red blood cells or hemoglobin. It causes fatigue, dizziness, shortness of breath, headaches, and irritability. More Information on Blood Counts.

Insufficient number of oxygen-carrying components of the blood.

Any condition in which there is an abnormally low number of red blood cells or hemoglobin in the blood.

Having too few red blood cells. 

Synonyms: anaemia Definition: (a-NEE-mee-a): A condition in which the number of red blood cells is below normal, usually resulting in tiredness. Also spelled anaemia.

Red blood cells carry oxygen all over our bodies. People who have anemia have fewer red blood cells than normal, which can make them feel tired because not enough oxygen is getting to their bodies [..]

Condition in which a decreased number of red blood cells may cause symptoms including tiredness, shortness of breath, and weakness.

A condition in which the patient has inadequate red blood cells and therefore cannot adequately oxygenate tissues, with resultant fatigue and intolerance of exercise. Anemia may result from loss of blood (hemorrhage) or from the inability of the bone marrow to make red blood cells. | ↑ Back to Top

the condition of having less than the normal number of red blood cells or hemoglobin in the blood, resulting in diminished oxygen transport. Anemia has many cause, including iron, vitamin B12, or fola [..]

A reduction in the number of circulating Erythrocytes or in the quantity of Hemoglobin.

A form of Anemia in which the Bone Marrow fails to produce adequate numbers of peripheral Blood Elements.

A rare Congenital Hypoplastic Anemia that usually presents early in infancy. The Disease is characterized by a moderate to severe Macrocytic Anemia, occasional Neutropenia or Thrombocytosis, a normoce [..]

A familial disorder characterized by Anemia with multinuclear Erythroblasts, karyorrhexis, asynchrony of nuclear and cytoplasmic maturation, and various nuclear abnormalities of Bone Marrow Erythrocyt [..]

Viral Disease of Horses caused by the Equine infectious anemia virus (EIAV; Infectious Anemia Virus, Equine). It is characterized by intermittent Fever, weakness, and Anemia. Chronic Infection consist [..]

Congenital disorder affecting all Bone Marrow Elements, resulting in Anemia; LEUKOPENIA; and Thrombopenia, and associated with cardiac, renal, and limb malformations as well as dermal pigmentary chang [..]

A condition of inadequate circulating Red Blood Cells (Anemia) or insufficient Hemoglobin due to premature destruction of Red Blood Cells (Erythrocytes).

Any one of a group of Congenital Hemolytic Anemias in which there is no abnormal Hemoglobin or spherocytosis and in which there is a defect of Glycolysis in the Erythrocyte. Common causes include defi [..]

Acquired Hemolytic Anemia due to the presence of Autoantibodies which agglutinate or lyse the Patient's own Red Blood Cells.

Hemolytic Anemia due to various intrinsic defects of the Erythrocyte.

Anemia characterized by a decrease in the ratio of the weight of Hemoglobin to the volume of the Erythrocyte, i.e., the Mean Corpuscular Hemoglobin concentration is less than normal. The individual Ce [..]

An inborn condition characterized by deficiencies of red Cell precursors that sometimes also includes LEUKOPENIA and Thrombocytopenia.

Anemia characterized by decreased or absent Iron stores, low Serum Iron concentration, low Transferrin saturation, and low Hemoglobin concentration or Hematocrit value. The Erythrocytes are hypochromi [..]

Anemia characterized by larger than normal Erythrocytes, increased Mean Corpuscular Volume (MCV) and increased Mean Corpuscular Hemoglobin (MCH).

A disorder characterized by the presence of Anemia, abnormally large Red Blood Cells (megalocytes or macrocytes), and Megaloblasts.

Anemia characterized by appearance of immature myeloid and Nucleated Erythrocytes in the peripheral Blood, resulting from infiltration of the Bone Marrow by foreign or abnormal Tissue.

The mildest form of Erythroblastosis Fetalis in which Anemia is the chief manifestation.

A Megaloblastic Anemia occurring in Children but more commonly in later Life, characterized by Histamine-fast Achlorhydria, in which the Laboratory and clinical manifestations are based on malabsorpti [..]

A severe sometimes chronic Anemia, usually macrocytic in type, that does not respond to ordinary antianemic therapy.

Chronic Refractory Anemia with Granulocytopenia, and/or Thrombocytopenia. Myeloblasts and Progranulocytes constitute 5 to 40 percent of the nucleated marrow Cells.

A Disease characterized by chronic Hemolytic Anemia, episodic painful crises, and pathologic involvement of many organs. It is the clinical expression of homozygosity for Hemoglobin S.

Anemia characterized by the presence of Erythroblasts containing excessive deposits of Iron in the marrow.

A blood disorder caused by reduced number or function of red blood cells. Symptoms may include shortness of breath, fatigue, and rapid heartbeat. HIV-associated causes of anemia include progression of HIV disease, opportunistic infections, and certain antiretroviral (ARV) drugs. See Related Term(s): Red Blood Cell

A reduction in the number of circulating erythrocytes or in the quantity of hemoglobin.

A form of anemia in which the bone marrow fails to produce adequate numbers of peripheral blood elements.

A rare congenital hypoplastic anemia that usually presents early in infancy. The disease is characterized by a moderate to severe macrocytic anemia, occasional neutropenia or thrombocytosis, a normoce [..]

A familial disorder characterized by ANEMIA with multinuclear ERYTHROBLASTS, karyorrhexis, asynchrony of nuclear and cytoplasmic maturation, and various nuclear abnormalities of bone marrow erythrocyt [..]

Anemia due to decreased life span of erythrocytes.

Acquired hemolytic anemia due to the presence of AUTOANTIBODIES which agglutinate or lyse the patient's own RED BLOOD CELLS.

Hemolytic anemia due to various intrinsic defects of the erythrocyte.

Any one of a group of congenital hemolytic anemias in which there is no abnormal hemoglobin or spherocytosis and in which there is a defect of glycolysis in the erythrocyte. In some cases, pyruvate ki [..]

Anemia characterized by a decrease in the ratio of the weight of hemoglobin to the volume of the erythrocyte, i.e., the mean corpuscular hemoglobin concentration is less than normal. The individual ce [..]

An inborn condition characterized by deficiencies of red cell precursors that sometimes also includes LEUKOPENIA and THROMBOCYTOPENIA.

Anemia characterized by decreased or absent iron stores, low serum iron concentration, low transferrin saturation, and low hemoglobin concentration or hematocrit value. The erythrocytes are hypochromi [..]

Anemia characterized by larger than normal erythrocytes, increased mean corpuscular volume (MCV) and increased mean corpuscular hemoglobin (MCH).

A disorder characterized by the presence of ANEMIA, abnormally large red blood cells (megalocytes or macrocytes), and MEGALOBLASTS.

Anemia characterized by appearance of immature myeloid and nucleated erythrocytes in the peripheral blood, resulting from infiltration of the bone marrow by foreign or abnormal tissue.

The mildest form of erythroblastosis fetalis in which anemia is the chief manifestation.

A megaloblastic anemia occurring in children but more commonly in later life, characterized by histamine-fast achlorhydria, in which the laboratory and clinical manifestations are based on malabsorpti [..]

A severe sometimes chronic anemia, usually macrocytic in type, that does not respond to ordinary antianemic therapy.

Chronic refractory anemia with granulocytopenia, and/or thrombocytopenia. Myeloblasts and progranulocytes constitute 5 to 40 percent of the nucleated marrow cells.

A disease characterized by chronic hemolytic anemia, episodic painful crises, and pathologic involvement of many organs. It is the clinical expression of homozygosity for hemoglobin S.

Anemia characterized by the presence of erythroblasts containing excessive deposits of iron in the marrow.

An abnormally low red blood cell count caused by insufficient intake of iron in the diet, blood loss, or other medical conditions.

a condition in which the number of red blood cells is less than normal, resulting in less oxygen being carried to the body's cells.

A condition in which a decreased number of red cells may cause symptoms including fatigue (tiredness), weakness, and/or shortness of breath.

Condition characterized by below-normal number of red blood cells. Anemic pets may have pale mucus membranes, weakness, exercise intolerance or panting.

A condition in which the number of red blood cells is below normal.

a condition where your red blood cells do not carry enough oxygen, usually because the number of red cells is too low

A condition in which the blood is deficient in red blood cells; can cause fatigue, shortness of breath, and a pale complexion.

A decrease in the number of red blood cells or less than the normal quantity of hemoglobin in the blood. Hemoglobin normally carries oxygen to the tissues so anemia leads to lack of oxygen in organs.

Reduction in total circulating red blood cell mass, diagnosed by a decrease in hemoglobin concentration. Anemic patients have low oxygen-carrying capacity of the blood, with resultant tissue hypoxia. The clinical symptoms are related to the severity of the anemia, and may include pallor, tachycardia, angina, light-headedness and fatigue. Anemia may [..]

Below normal levels of red blood cells or hemoglobin, or both, which can be caused by many different conditions, including iron deficiency. Symptoms may include fatigue, weakness, headache, and dizzin [..]

a blood condition that occurs when red blood cell count drops significantly, making it difficult for the body to get enough oxygen to its tissues.

A condition in which the blood is deficient in red blood cells, in hemoglobin, or in total volume.

A condition of having less than the normal number of red blood cells or less than normal quantity of hemoglobin in the blood.

A decrease in the number of red blood cells, or, less than the normal quantity of hemoglobin (found in red blood cells) in the blood.

weakness, fatigue, and paleness resulting from a deficiency of red blood cells or insufficient amounts of hemoglobin molecules within the red cells. Antibody

Condition in which the red cell content of the blood is below normal limits. Most common cause is a deficiency of iron, an element necessary for the formation of hemoglobin.

Anemia is derived from Greek, (an-haîma) meaning "without blood." It is defined as a qualitative or quantitative deficiency of hemoglobin, a molecule inside red blood cells (RBCs). As hemoglobin carries oxygen from the lungs to the tissues, anemia leads to hypoxia (lack of oxygen) in organs. The three main classes of anemia include excess [..]

decreased ability of the blood to carry oxygen from the lungs throughout the body. This is measured as hemoglobin or red blood cell count.

Weakness, fatigue, and paleness resulting from a deficiency of red blood cells or insufficient amounts of hemoglobin molecules within the red cells.

When the number of red blood cells is below normal, it can result in fatigue, weakness, and shortness of breath.

decrease in red blood cells (lower than normal)

Any condition in which the number of red blood cells per mm3, the amount of hemoglobin in 100 ml of blood, and/or the volume of packed red blood cells per 100 ml of blood are less than normal; clinica [..]

A condition in which the oxygen-carrying capacity of the blood is reduced. It is the most common symptom of iron deficiency.

A condition in which the number of red cells or the amount of hemoglobin in the blood is abnormally low.

A decrease in the normal number of red blood cells, usually below 10g/dL with over 13-14g/dL being normal. Myeloma in the bone marrow blocks red blood cell production causing shortness of breath, weakness and tiredness. Anesthesia

A condition in which the number of red blood cells is below normal.

 Having too few red blood cells. Symptoms of anemia include feeling tired, weak, short of breath, or dizzy.

decreased ability of the blood to carry oxygen from the lungs throughout the body. This is measured as hemoglobin or red blood cell count.

A lower than normal number of red blood cells.