to the editor: In their recent letter to the editor,¹ Drs. Fung and Kennon misrepresented the position of the World Health Organization (WHO) when they stated that WHO recommends changing the name of multiple chemical sensitivities (MCS) to “idiopathic environmental intolerances.” The reference² that the authors cited in their letter was anonymously published and was not authorized by the workshop's sponsors (UNEP-ILO-WHO). It contained the following disclaimer:

“These conclusions and recommendations contain the collective views of an international group of experts and do not necessarily represent the decisions or the stated policy of the United Nations Environment Programme (UNEP), the International Labour Organization (ILO) or the World Health Organization (WHO).”²

Despite this disclaimer, some of the workshop participants began to misrepresent WHO's position on MCS after the meeting. In response, WHO issued a statement to participants,³ which reaffirmed the disclaimer and stated that “(w)ith respect to ‘MCS’, WHO has neither adopted nor endorsed a policy or scientific opinion.”

in reply: Dr. McCampell's letter¹ appears to mis-state the content of our previous letter² and then claims that the mis-stated information is a misrepresentation. In the era of evidence-based medicine, we have not seen validated evidence to support any pathophysiologic basis for “multiple chemical sensitivity.” We also would like to point out that the position papers^3,4 previously used the term “idiopathic environmental intolerances” based on a published article.⁵

We remain comfortable about the objectivity and the contribution to the discussion presented in our letter.² Staudenmayer⁶ states it best, “If all concerned would adhere to the scientific method and respect the principles of physics and chemistry that are the foundation of toxicological and biological medicine, this phenomenon will more likely find a resolution.”