"Pokemonitis": the dangers of black henna tattoos

The so-called temporary tattoos made with black henna are increasingly common during the summer months, especially in children and youth. Henna is a natural dye that is used mixed with other substances, such as phenylenediamine, which may have sensitizing capacity. We describe the case of a four year old boy who presented residual hypopigmented lesions on both forearms a month after the completion of these tattoos. We want to bring these curious images to draw attention to the dangers of black henna.