Denouement and Discussion Meyerson Phenomenon Within a Congenital Melanocytic Nevus

摘要

The Meyerson phenomenon refers to a localized eczematous eruption that has been most commonly described in association with acquired melanocytic nevi (Figure 2); such a lesion may be referred to as a Meyerson nevus.1-2 The terms halo dermatitis and halo eczema are also frequently used to describe such nevi. A halo nevus, however, is a different entity and refers clinically to a nevus that is surrounded by a rim of hypopigmentation. Halo nevi may eventuate in complete disappearance of the associated pigmented lesion, whereas this is not seen with Meyerson nevi.