... • Dermatologic: Allergic hypersensitivity and contact allergic reactions may occur in sensitive individuals [46,50,100,103,108,113,116,151,156,190,222,230,240,267,304,305,315,325,352,353,358,415,417,426,429,465,487,508,521]. Dermatitis, photodermatitis, stomatitis, glossitis, gingivitis, perioral dermatitis, perioral leukoderma (simulating vitiligo), oral lesions, cheilitis, eczema, lip edema, irritation, and depigmentation have been noted in case reports after external application of cinnamon (e.g., cinnamon oils in fragrances or cinnamic aldehyde in deodorant) as well as after the use of flavored chewing gums, mints, or toothpastes [3,12,20,27,31,40,47,50,51,52,59,91,98,100,107,110,112,135,136,137,142,156,157,158,159,163,164,167,170,178,187,188,206,237,242,243,246,247,269,285,286,297,317,323,330,339,340,346,349,350,362,369,370,380,381,403,409,429,432,447,440,451,452,456,459,460,461,484,493,503,515,519,522,539,549,551]. One case of allergic contact dermatitis has been reported as a result of airborne exposure to cinnamon [9]. ...