Multiple Chemical Syndrome (MCS)

Introduction / Diseases / Multiple Chemical Syndrome (MCS)


Multiple Chemical Syndrome (MCS)

This syndrome is characterised by the presence of symptoms such as allergies, respiratory distress, itching, fatigue, nausea, dizziness, fainting, cardiovascular disorders, etc., which occur and/or are exacerbated in the presence of chemicals.

In these patients, the tolerance level to these chemicals is lowered as time passes and exposure increases. Many of them are unable to lead a normal life. There is a direct relationship between chemical exposure and the development of the syndrome and the severity of the symptoms.


  • Laboratory products.
  • Soaps or colognes.
  • Detergents or cleaning products.
  • Carbon monoxide.
  • Gasoline.
  • Pesticides.
  • Organic solvents.

There is also a central sensitivity that generates constant responses regardless of the presence or absence of a stimulus.  Most patients with MCS have symptoms in common with Fibromyalgia, Chronic Fatigue Syndrome or Irritable Bowel Syndrome, among others. Therefore, encompassing this disease within the Central Sensitivity Syndrome is very important for the diagnosis and correct treatment of these patients.


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