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Mercury poisoning is a type of metal poisoning due to exposure to mercury. [3] Symptoms depend upon the type, dose, method, and duration of exposure. [3] [4] They may include muscle weakness, poor coordination, numbness in the hands and feet, skin rashes, anxiety, memory problems, trouble speaking, trouble hearing, or trouble seeing. [1]
While all mercury compounds are toxic, organomercury compounds are especially dangerous because they are more mobile. Methyl mercury and related compounds are thought to bind to the sulfur of cysteinyl residues in proteins. [28] A 92-year-old Caucasian man (right) with pigmentary changes had used nose drops containing silver for many years.
Elemental mercury (which is a component of amalgam) is absorbed very differently than methylmercury (which is found in fish). [2] The exposure to mercury from amalgam restorations depends on the number and size of restorations, composition, chewing habits, food texture, grinding, brushing of teeth, and many other physiological factors. [2]
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At this point, tests proved that she had severe mercury poisoning. [5] [6] [9] Her blood and urinary mercury content were measured at 4,000 μg/L [7] and 234 μg/L, respectively—both many times their respective toxic thresholds of 200 μg/L and 50 μg/L (blood and urine reference ranges are 1 to 8 μg/L and 1 to 5 μg/L). [8]
Minamata disease (Japanese: 水俣病, Hepburn: Minamata-byō) is a neurological disease caused by severe mercury poisoning.Signs and symptoms include ataxia, numbness in the hands and feet, general muscle weakness, loss of peripheral vision, and damage to hearing and speech.
Some facial creams contain dangerous levels of mercury. Most contain comparatively non-toxic inorganic mercury, but products containing highly toxic organic mercury have been encountered. [163] [164] New York City residents have been found to be exposed to significant levels of inorganic mercury compounds through the use of skin care products ...
Dimethylmercury is extremely toxic and dangerous to handle. Absorption of doses as low as 0.1 mL can result in severe mercury poisoning. [2] The risks are enhanced because of the compound's high vapor pressure. [2]