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Individuals with TEC have a median age of presentation of 18–26 months; however, the disorder may occur in infants younger than 6 months and in children as old as age 10 years. Because of the gradual onset of the anemia, children are often healthier than expected from their low hemoglobin levels.
Infants under 6 months of age have lower levels of a key methemoglobin reduction enzyme (NADH-cytochrome b5 reductase) in their red blood cells. This results in a major risk of methemoglobinemia caused by nitrates ingested in drinking water, [ 13 ] dehydration (usually caused by gastroenteritis with diarrhea), sepsis, or topical anesthetics ...
Hemolytic anemia (also known as haemolytic anaemia) is an anemia due to hemolysis, the abnormal breakdown of red blood cells. A number of different mediating factors can cause this condition; either from within the blood cell itself (intrinsic factors) or outside of the cell (extrinsic factors). [39] Congenital hemolytic anemia: Fanconi anemia ...
Anemia (also spelled anaemia in British English) is a blood disorder in which the blood has a reduced ability to carry oxygen.This can be due to a lower than normal number of red blood cells, a reduction in the amount of hemoglobin available for oxygen transport, or abnormalities in hemoglobin that impair its function.
Acanthocytes, from peripheral blood, under light microscopy. Note the irregularly shaped, non-circular cells in the image. Acanthocyte (from the Greek word ἄκανθα acantha, meaning 'thorn'), in biology and medicine, refers to an abnormal form of red blood cell that has a spiked cell membrane, due to thorny projections.
Iron-deficiency anemia is anemia caused by a lack of iron. [3] Anemia is defined as a decrease in the number of red blood cells or the amount of hemoglobin in the blood. [3] When onset is slow, symptoms are often vague such as feeling tired, weak, short of breath, or having decreased ability to exercise. [1]
The symptoms of cytopenia vary depending on the type. The symptoms of anemia include: [citation needed] Fatigue; Weakness; Shortness of breath; Poor concentration; Dizziness or feeling lightheaded; Cold hands or feet [4] The symptoms of leukopenia include: Frequent infections; Fever; The symptoms of thrombocytopenia include: Easily bleeding or ...
A blood smear showing hypochromic (and microcytic) anemia. Note the increased central pallor of the red blood cells. Hypochromic anemia is a generic term for any type of anemia in which the red blood cells are paler than normal. (Hypo- refers to less, and chromic means colour.) A normal red blood cell has a biconcave disk shape and will have an ...