title: [Reaction to a black henna tattoo treated with mometasone furoate and silicone gel: case report].
abstract: Black henna tattoos have paraphenylenediamine (PPD), which contains a product of herbal origin, which due to its molecular characteristics is capable of inducing, in susceptible individuals, a type IV hypersensitivity reaction. It clinically manifests as a contact dermatitis that usually when it disappears, scarring and hypopigmentation are left in the injured area.
  
  
  OBJECTIVE
  To describe the case of a patient with hypersensitivity to henna tattoo and to present the most relevant phenomena associated with this condition.
  
  
  METHODS
  The case of a 6 year-old patient with a black henna tattoo on his right leg, who was diagnosed with contact dermatitis probably attributed to PPD, is presented. Mometasone furoate and topical silicone gel treatment was started with good response.
  
  
  CONCLUSIONS
  Mometasone furoate and silicone gel are a good possible therapeutic option for treating contact dermatitis caused by PPD as the dermatosis was resolved without residual lesions.
authors.forename: Carlos Manuel
authors.initials: CM
authors.lastname: Aboitiz-Rivera
authors.forename: Ruben
authors.initials: R
authors.lastname: Blachman-Braun
authors.forename: Laura Graciela
authors.initials: LG
authors.lastname: Ferrer-Arellano
mesh_terms: D002648:Child; D004396:Coloring Agents / Q000008:administration & dosage / Q000009:adverse effects; D017449:Dermatitis, Allergic Contact / Q000188:drug therapy / Q000209:etiology; D004359:Drug Therapy, Combination; D005260:Female; D006801:Humans; D006968:Hypersensitivity, Delayed / Q000188:drug therapy / Q000209:etiology; D000068656:Mometasone Furoate / Q000008:administration & dosage / Q000627:therapeutic use*; D010655:Phenylenediamines / Q000008:administration & dosage / Q000009:adverse effects*; D020034:Silicone Gels / Q000008:administration & dosage / Q000627:therapeutic use*; D013653:Tattooing / Q000009:adverse effects*; D016896:Treatment Outcome
chemical_list: D004396:Coloring Agents; D010655:Phenylenediamines; D020034:Silicone Gels; D000068656:Mometasone Furoate; C029728:4-phenylenediamine