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In some cases, a drug can cause the immune system to mistakenly think the body's own red blood cells are dangerous, foreign substances. Antibodies then develop against the red blood cells. The antibodies attach to red blood cells and cause them to break down too early. It is known that more than 150 drugs can cause this type of hemolytic anemia ...
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. [citation needed]
Erythropoiesis-stimulating agents are only recommended in those with severe anemia. [10] Anemia is the most common blood disorder, affecting about a fifth to a third of the global population. [1] [11] [12] [13] Iron-deficiency anemia is the most common cause of anemia worldwide, and affects nearly one billion people. [14]
If a person without a Kidd blood antigen (for example a Jka-Jkb+ patient) receives a Kidd antigen (Jka-antigen for example) in a red blood cell transfusion and forms an alloantibody (anti-Jka); upon subsequent transfusion with Jka-antigen positive red blood cells, the patient may have a delayed hemolytic transfusion reaction as their anti-Jka antibody hemolyzes the transfused Jka-antigen ...
This is common in immunocompromised, elderly, and diabetic people. High blood loss can also come from the increased loss of blood during menstruation, childbirth, cancers of the intestines, and disorders that hinder the blood's ability to coagulate. [citation needed] Medications can have adverse effects and cause nutritional anemia as well.
Methemoglobinemia mostly affects infants under 6 months of age (particularly those under 4 months) due to low hepatic production of methemoglobin reductase. [ 23 ] [ 24 ] The most at-risk populations are those with water sources high in nitrates , such as wells and other water that is not monitored or treated by a water treatment facility.
Various diseases can lead to transfusion-dependent anemia, most notably myelodysplastic syndromes (MDS) and thalassemia. [4] [5] Due to the number of diseases that can cause transfusion-dependent anemia, diagnosing it is more complicated. Transfusion dependence occurs when an average of more than 2 units of blood transfused every 28 days is ...
Macrocytic anemias have several causes but with the implementation of folic acid fortification in North America, folate deficiency has become a rare cause of megaloblastic macrocytic anemia in that part of the world. [1] In this region, Vitamin B 12 deficiency is a far more common cause of megaloblastic macrocytic anemia. [1]