MCS is an acronym for multiple chemical sensitivities. This is a problem that some people have without knowing it. Others are quite aware of it because it makes them almost dysfunctional at times and friends and family do not understand what their problem is, and often judge them as being lazy or hypochondriacal. However, these people are ill and need support.
The causes can be many. Often there is an initial trigger, such as working in a photographic lab or in a factory with harsh chemicals, or taking certain medications. But once the problem starts, then all kinds of things can be triggers, including what is in the air, in air conditioning systems, and in products of all kinds in the home or office.
Printers, copiers, toners, glue, perfume, pressed wood board, fireproofing in clothing and mattresses, pesticides, detergents…almost anything can trigger very uncomfortable reactions. Reactions to various molds can be so severe as to make the person unable to think straight, and actions have to be taken to reduce the toxic load.
A person with MCS not only has to reduce the toxic load in their environment, they also have to reduce the toxic load in their bodies. This is quite a bit of work and expense.
Some doctors are aware of the problem and ask that patients refrain from wearing any perfumes and fragrances in their office. This is a small step, but one in which we might all be more sensitive.