Recent increase in allergic reactions to methylchloroisothiazolinone/methylisothiazolinone: is methylisothiazolinone the culprit?
Summary of "Recent increase in allergic reactions to methylchloroisothiazolinone/methylisothiazolinone: is methylisothiazolinone the culprit?"
Background. The frequency of sensitization to methylchloroisothiazolinone (MCI)/ methylisothiazolinone (MI) observed in the Information Network of Departments of Dermatology (IVDK) was constantly around 2.1% from 1998 to 2009. After that, it increased to 3.9% in 2011, paralleled by an increase in the frequency of allergic reactions to MI in the preservative series from 1.9% in 2009 to 4.4% in 2011. MI without MCI has increasingly been used as a preservative in cosmetics and skin care products in recent years. Objectives. To epidemiologically investigate the possible reasons for this development and to analyse concomitant reactions to MCI/MI and MI. Methods. A retrospective analysis of IVDK data from 2009 to 2011 was performed. Results. Stratified data analysis revealed pronounced increases in reactivity to MCI/MI and MI in females, face dermatitis patients, and patients tested because of suspected cosmetic intolerance. The proportion of MI-positive patients among those reacting to MCI/MI increased from 43% to 59% between 2009 and 2011. Conclusion. More widespread consumer exposure has most likely led to the increase in primary sensitization to MI and subsequently to a rise in MCI/MI reactions resulting from immunological cross-reactions. A reduction in the maximum use concentration of MI seems advisable. MI should be patch tested in the baseline series.
Information Network of Departments of Dermatology, University of Göttingen, 37075 Göttingen, Germany Department of Medical Informatics, Biometry and Epidemiology, University of Erlangen-Nuremberg, 91054 Erlangen, Germany.
This article was published in the following journal.
Name: Contact dermatitis
- PubMed Source: http://www.ncbi.nlm.nih.gov/pubmed/22994269
- DOI: http://dx.doi.org/10.1111/j.1600-0536.2012.02157.x
Medical and Biotech [MESH] Definitions
Agents that are used to treat allergic reactions. Most of these drugs act by preventing the release of inflammatory mediators or inhibiting the actions of released mediators on their target cells. (From AMA Drug Evaluations Annual, 1994, p475)
Dermatitis, Allergic Contact
A contact dermatitis due to allergic sensitization to various substances. These substances subsequently produce inflammatory reactions in the skin of those who have acquired hypersensitivity to them as a result of prior exposure.
Rhinitis, Allergic, Seasonal
Allergic rhinitis that occurs at the same time every year. It is characterized by acute CONJUNCTIVITIS with lacrimation and ITCHING, and regarded as an allergic condition triggered by specific ALLERGENS.
Gastrointestinal disturbances, skin eruptions, or shock due to allergic reactions to allergens in food.
Abnormal accumulation of fluid in tissues of any part of the LARYNX, commonly associated with laryngeal injuries and allergic reactions.
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