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[Multiple chemical sensitivity, a well-defined illness?].

Henrik A Kolstad1, Martin Silberschmidt, Jesper Bo Nielsen

  • 1Arhus Universitetshospital, Arbejdsmedicinsk Klinik, Arhus C. hkols@as.aaa.dk

Ugeskrift for Laeger
|March 21, 2006
PubMed
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Multiple chemical sensitivity (MCS) is a functional condition, not explained by toxicology. Patients benefit from training to confront everyday chemicals, rather than avoidance strategies.

Area of Science:

  • Environmental Health
  • Psychiatry
  • Toxicology

Background:

  • Some individuals report non-specific symptoms, fear, and social isolation triggered by chemical exposures below toxicological thresholds.
  • These reactions may lead to a diagnosis of multiple chemical sensitivity (MCS).
  • Existing theories lack empirical evidence to support toxicological mechanisms for MCS.

Purpose of the Study:

  • To review the current understanding of multiple chemical sensitivity (MCS).
  • To evaluate the proposed etiological mechanisms for MCS.
  • To propose an evidence-based approach to patient information and treatment.

Main Methods:

  • Literature review of existing studies on multiple chemical sensitivity.
  • Analysis of proposed toxicological and non-toxicological explanations for MCS symptoms.

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  • Synthesis of findings to inform clinical recommendations.

    • Main Results:

    • No empirical evidence supports toxicological mechanisms as the primary cause of MCS.
    • The review suggests MCS is best understood as a functional condition.
    • Current management strategies focusing on chemical avoidance may be counterproductive.

    Conclusions:

    • Multiple chemical sensitivity (MCS) is a functional disorder, not a toxicological one.
    • Treatment should focus on patient education and training for chemical confrontation.
    • Shifting from avoidance to confrontation strategies is recommended for managing MCS.