Prurigo pigmentosa associated with an atopic diathesis in a 13-year-old girl.

We report an Italian prepubescent girl with the typical clinical and histologic features of prurigo pigmentosa associated with an atopic diathesis. The dermatitis disappeared after treatment with minocycline, leaving a brown, reticulated hyperpigmentation, with no recurrence. The association with an atopic diathesis could justify, in this instance, the major susceptibility to environmental factors claimed by some authors as triggering factors for prurigo pigmentosa. To our knowledge, this is only the second occurrence of this disease in a prepubescent patient reported in the literature.