[An infant with a nevus on the upper leg].

We present a 4-month-old infant with an eczematous halo around a congenital melanocytic nevus. After diagnostic excision, histopathologic examination revealed a Meyerson's nevus. This is a benign skin tumour that may show clinical signs of melanoma. It is therefore important to include Meyerson's nevus in the differential diagnosis of melanoma.