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Multiple Chemical Sensitivities Safety and Health Topics
Multiple Chemical Sensitivities

Multiple Chemical Sensitivities (MCS) is a highly controversial issue. In theory, MCS is an adverse physical reaction to low levels of many common chemicals. Chemical sensitivity is generally accepted as a reaction to chemicals but debate continues as to whether MCS is classifiable as an illness. There are a number of synonyms for MCS, including 20th century disease, environmental illness, total allergy syndrome, idiopathic environmental illness, and chemical AIDS.

Proposed theories to explain the cause of MCS include allergy, dysfunction of the immune system, neurobiological sensitization, and various psychological theories. There is insufficient scientific evidence to confirm a relationship between any of these possible causes and symptoms. Due to the lack of definite information an evaluation must be performed by a physician knowledgeable of the symptoms of this condition.

The following questions link to information relevant to multiple chemical sensitivities in the workplace.

Hazard Recognition What hazards are associated with multiple chemical sensitivity (MCS)?
Evaluation and Management How is MCS clinically evaluated and managed?
Additional Information What additional information is available?
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