Multiple Chemical Sensitivity (MCS)
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 on 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 commonly asked questions link to resources that provide information about MCS.
Multiple Chemical Sensitivity
A trend noted by many people has been an increase in what seems to be allergic reactions in the general population. Ranging from congestion to sneezing to more severe reactions such as rashes, breathing problems and worse, these reactions are often non-specific to natural allergens. Some activists and researchers have identified chemicals as potential factors in these reactions. Multiple Chemical Sensitivity (MCS) is the name given to the broad issue of reactions to specific or cumulative chemicals in the environment. This fact sheet will present a definition of MCS and the related Environmental Illness; explore factors of and criticisms to MCS; and examine the individual's role in reducing potential sensitivity.