Eosinophilic pustulosis of the scalp was first described in 1984. It has also been described in other sites than the scalp. We report a case in which the lesions exclusively involved the genitals. A 4-month-old boy presented with papulopustular lesions of the genitals in the form of pyodermitis with a favourable course over several days but which subsequently recurred. A smear of a pustule revealed no signs of scabies or viral, fungal or bacterial infection. Histology showed a non-follicular eosinophilic pustulosis. This case emphasizes the ubiquitous and sometimes misleading nature of eosinophilic pustulosis and the non-follicular nature of the lesions.

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