Costa Azevedo, AndréCamilo Marinhas, AndreiaCosta e Silva, AndréCosta, MarianaMartinho, Isabel2021-11-022021-11-022021-09Costa-Azevedo A, Camilo-Marinhas A, Costa e Silva A, Costa M, Martinho I, Nascer e Crescer - Birth and Growth Medical Journal 2020;30(3): 186-188. doi:10.25753/BirthGrowthMJ.v30.i3.202052183-9417http://hdl.handle.net/10400.16/2519Herein are reported two cases of a previously healthy fourteen-year-old girl and a nine-year-old boy who presented to the Pediatric Emergency Department with a cutaneous reaction after applying a temporary black henna tattoo. Diagnosis of delayed hypersensitivity to black henna was established. Black henna tattoos are known for their temporary and harmless nature, but henna usually contains paraphenylendamine (PPD), originating black henna. PPD induces skin sensitization and causes allergic contact dermatitis.engallergycontact dermatitishenna tattoorashjournal article10.25753/BirthGrowthMJ.v30.i3.20205