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Clinicopathologic Review: Synchronous White Lesions of the Lateral Tongue and Cheek CONCLUSION A contact reaction to cinnamon-flavored candy should be considered in patients who present with multiple, white, somewhat shaggy-appearing lesions that are specifically located in areas of contact with a candy held in the mouth. This includes the central buccal mucosa (uni- or bilaterally) as well as the lateral tongue. Presence of a burning sensation is a particularly useful clue, since it is not associated with any of the other pathologies discussed above. It is also important to note that intraoral contact reactions may manifest in other ways, including presentation as a lichenoid lesion. Careful examination of the lesion(s) and consideration of the location or distribution are important in order to achieve the correct diagnosis. If a contact reaction is suspected, the patient should be questioned about any habits, like frequent consumption of cinnamon-flavored candies. If the history suggests a contact reaction, the patient should be directed to stop using or consuming the suspected allergen for a period of two weeks, and then the tissue should be re-evaluated. Resolution of the lesion(s) after discontinuation of the candy, food, or oral hygiene product helps confirm the diagnosis and no further treatment is necessary. However, if the lesion persists after discontinuation of the offending agent, a biopsy is indicated to rule out other possible conditions, such as dysplasia or lichen planus. REFERNCES: 1 Neville BW, Damm DD, Allen CW, Chi AM. Oral and Maxillofacial Pathology. 4th edition. St. Louis: Elsevier; 2016. 2 Feller L, Wood NH, Khammissa RA, Lemmer J. Review: Allergic contact stomatitis. Oral Surg Oral Med Oral Pathol Oral Radiol. 2017 May; 123(5):559-565. 3 Minciullo PL, Paolino G, Vacca M, Gangemi S, Nettis E. Unmet diagnostic needs in contact oral mucosal allergies. Clinl Mol Allergy. 2016 Sep 1; 14(1):10. 4 Flores-Hidalgo A, Lim SO, Curran AE, Padilla RJ, Murrah V. Considerations in the diagnosis of oral hairy leukoplakia, an institutional experience. Oral Surg Oral Med Oral Pathol Oral Radiol. 2018 Mar; 125(3):232-235. 5 Calapai G, Miroddi M, Mannucci C, Minciullo P, Gangemi S. Oral adverse reactions due to cinnamon-flavoured chewing gums consumption. Oral Dis. 2014 Oct; 20(7): 637-643. 6 Cohen D, Batthacharyya I. Cinnamon induced oral erythema multiforme sensitivity reaction. JADA. 2000 Jul; 131(7):929-34. 32 MA R CH/A P R I L 2020 | P EN N S YLVA N IA D EN TA L J O UR N A L 7 Prasad JL and Bilodeau EA. Oral hairy leukoplakia in patients without HIV: presentation of 2 new cases. Oral Surg Oral Med Oral Pathol Oral Radiol. 2014 Nov; 118(5):e151-60. 8 Al-Hashimi I, Schifter M, Lockhart PB, Wray D, Brennan M, Migliorati CA, Axell T, Bruce AJ, Carpenter W, Eisenberg E, Epstein JB, Holmstrup P, Jontell M, Lozada-Nur F, Nair R, Silverman B, Thongprasom K, Thornhill M, Warnakulasuriya S, van der Waal I. Oral lichen planus and oral lichenoid lesions: diagnostic and therapeutic considerations. Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2007 Mar; 103 Suppl: S25.e1-12. 9 Eisen D, Carrozzo M, Bagan Sebastian JV, Thongprasom K. Number V Oral lichen planus: clinical features and management. Oral Dis. 2005 Nov; 11(6):338-349. 10 Amagasa T, Yamashiro M, Uzawa N. Oral premalignant lesions: from a clinical perspective. Int J Clin Oncol. 2011 Feb; 16(1):5-14.