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Manganese should not be confused with Magnesium, a mineral that is essential for human nutrition.
Who is at risk for welding rod manganism, welder's-disease?
Recent manganism, welder's-disease, research has focused on
welding rod industry. Welders are apparently at a greater risk of manganese poisoning than most. Thus, manganism is also known as welder's-disease or welding rod disease. However, welding rod use is not
only potential source of manganese exposure. Other workers may also be at risk of manganism. In addition to welding, on-the-job exposure to manganese occurs mainly in mining, alloy production, processing, ferro-manganese operations, and work with agrochemicals (Levy & Nassetta, 2003).
Manganese also enters
air from iron, steel and power plants, coke ovens and from dust in mining operations. Those who are at
greatest risk of this airborne exposure again include welders, along with railroad workers, miners, steel workers, and those who handle pesticides containing maneb and mancozeb. This list is not conclusive, and there are other groups that may be affected. Contact a qualified medical professional for an evaluation if you feel that you have been poisoned by manganese exposure.
Additional research suggests that men may be at greater risk of manganism than women, although effects were also observed in women (Mergler, et al 1999). Men’s risk may be greater because they are more likely to have a job that exposes them to higher levels of manganese. Most welders, construction workers and other people in jobs that place them at risk for manganism are men. Obvious symptoms may not develop until after age 50; however, subtle, less noticeable symptoms of manganism may also appear in individuals who are younger and who have experienced prolonged, low-level exposure to manganese.
The Occupational Safety and Health Administration (OSHA) has issued a paper connecting manganese poisoning to Parkinson's-like manganism; asthenia, insomnia, mental confusion; metal fume fever, dry throat, coughing, tight chest; dyspnea, rales, flu-like fever; lower-back pain, vomiting, malaise and fatigue.

Michael Monheit, Esquire is the managing attorney for Monheit Law, located in Philadelphia, Pennsylvania Monheit Law, P.C. concentrates its practice in the field of plaintiff personal injury cases on a contingency fee basis. They can be found at http://www.monheit.com