Dermatologic conditions are common among persons who have recently traveled.1Ryan ET Wilson ME Kari KC Current concepts: illness after international travel.N Engl J Med. 2002; 347: 505-516Crossref PubMed Scopus (272) Google Scholar We share our recent experience with a young traveler in whom an allergic contact dermatitis to henna developed. While on vacation in the Dominican Republic, an 11-year-old boy had temporary henna tattoos applied to his upper arms bilaterally by a street artist. Two weeks later an erythematous, pruritic rash developed at the tattoo sites. He was seen by his pediatrician, who prescribed topical steroid therapy with fluticasone propionate ointment, oral prednisone, and cetirizine. On referral, examination revealed erythematous patches with accentuation at the borders of the tattoo sites (Figure).In addition, erythematous papules were clustered on the upper chest, face and extensor aspects of the extremities. A biopsy specimen taken from the left wrist revealed spongiotic dermatitis, subacute type with eosinophilia suggesting an id reaction. At follow-up examination one week later, the eruption had cleared completely. Henna is derived from the Lawsonia tree, which grows in the hot climates of India, the Middle East, and North Africa.2Kulkarni PD Herron JB Moores WB Hahn HB What is your diagnosis? Allergic contact dermatitis to paraphenylenediamine in a temporary henna tattoo.Cutis. 2001; 68: 229-230Google Scholar Skin painting or pseudotattooing is traditionally performed with henna or other labile vegetable substances, primarily in Muslim and Hindu persons.3Le Coz CJ Lefebvre C Keller F Grosshans E Allergic contact dermatitis caused by skin painting (pseudotattooing) with black henna, a mixture of henna and p-phenylenediamine and its derivatives.Arch Dermatol. 2000; 136: 1515-1517Crossref PubMed Scopus (122) Google Scholar Temporary henna tattoos are becoming more popular, especially among teenagers and travelers, resulting in more extensive henna use worldwide.4Onder M Atahan CA Oztas P Oztas MO Temporary henna tattoo reactions in children.Int J Dermatol. 2001; 40: 577-579Crossref PubMed Scopus (67) Google Scholar Allergic and irritant reactions are rare with henna, which is relatively safe. However, additives such as paraphenylenediamine, a well recognized contact allergen that is sometimes mixed with henna to impart color to the pure reddish-brown paste, may result in more common reactions to henna tattooing.
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