Cinnamon, judging from the paucity of reports in the literature, would appear to be an uncommon cause of contact dermatitis. White and Boston (cited by Zakon et al.1), in 1897, reported on a woman who developed an eruption of the hands, face, and abdomen as a result of dipping toothpicks in cinnamon (cassia) oil to flavor them. Tulipan2 treated a baker with a contact dermatitis of the palms who gave a positive reaction to cinnamon used in making dough and icing. Silvers3 reported a case of dermatitis and stomatitis attributed to clove oil and cinnamon oil. Miller's patient4 developed chelitis from oil of cinnamon in bubble gum, while Laubach, Malkinson, and Ringrose5 described a case of cheilitis from cinnamon (cassia) oil in toothpaste. Howell,6 in the tabulation of 250 cases of contact dermatitis observed in a period of one year, included one case of
KERN AB. Contact Dermatitis from Cinnamon. AMA Arch Derm. 1960;81(4):599–600. doi:10.1001/archderm.1960.03730040103018
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