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Vol. 74, No. 5
ISSN: 1488-2159
June 2008


Contact Allergy to Cinnamon: Case Report


• Steve Tremblay, DMD, MSD, MSc, FRCD(C) •
• Sylvie Louise Avon, DMD, MSc, PhD, FRCD(C) •

A b s t r a c t

Allergic contact stomatitis is a rare disorder that is unfamiliar to most clinicians. The vast majority of cases are associated with consumption of products containing cinnamaldehyde or cinnamon essential oil, which are used as flavourings because of their pleasant taste and sensation of freshness. We report here the case of a patient who was diagnosed with alllergic contact stomatitis due to cinnamon-flavoured chewing gum. The clinical features of allergic contact stomatitis, which may occur indiscriminately on any of the oral mucosa, include edema and erythroplakic, ulcerous or hyperkeratotic changes, generally accompanied by a burning sensation. The histopathologic aspect of allergic contact stomatitis is nonspecific but tends to support the clinical diagnosis. Treatment generally consists of eliminating the causal agent. To avoid unnecessary diagnostic procedures and treatments, it is important for clinicians to recognize this disorder to be able to diagnose it quickly and accurately.


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