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Methemoglobinemia may be acquired. [7] Classical drug causes of methemoglobinemia include various antibiotics (trimethoprim, sulfonamides, and dapsone [8]), local anesthetics (especially articaine, benzocaine, prilocaine, [9] and lidocaine [10]), and aniline dyes, metoclopramide, rasburicase, umbellulone, chlorates, bromates, and nitrites. [11]
In methemoglobinemia, drug-induced oxidative stress causes the oxidation of the Fe 2+ ion within the heme molecule in hemoglobin to Fe 3+, forming excessive amounts of methemoglobin. Methemoglobin is unable to bind to oxygen causing the individual to be unable to oxygenate their tissues. [ 13 ]
This is a list of drugs and substances that are known or suspected to cause Stevens–Johnson syndrome This is a dynamic list and may never be able to satisfy particular standards for completeness. You can help by adding missing items with reliable sources .
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 ...
Causes Hemolysis Hemolytic anemia or haemolytic anaemia is a form of anemia due to hemolysis , the abnormal breakdown of red blood cells (RBCs), either in the blood vessels (intravascular hemolysis) or elsewhere in the human body (extravascular). [ 2 ]
Autoimmune hemolytic anemia (AIHA) is an autoimmune disorder which occurs when antibodies directed against the person's own red blood cells (RBCs) cause them to burst , leading to an insufficient number of oxygen-carrying red blood cells in circulation . The lifetime of the RBCs is reduced from the normal 100–120 days to just a few days in ...
Another was that by virtue of being a combination drug, it was less likely to cause drug resistance. However, because dapsone causes hemolytic anemia in patients with G6PD deficiency, and because G6PD deficiency affects 10-25% of the population of sub-Saharan Africa, it was discovered that Lapdap is not safe for use in Africa.
About half of the cases are of unknown cause, with the other half attributable to a predisposing condition or medications being taken. Contrary to cold autoimmune hemolytic anemia (e.g., cold agglutinin disease and paroxysmal cold hemoglobinuria) which happens in cold temperature (28–31 °C), WAIHA happens at body temperature. [citation needed]