- A Meyerson's nevus is a nevus with an eczematous halo.
- The Meyerson phenomenon (MP) is an eczematous halo about any lesion.
- The Meyerson phenomenon has also been described about other lesions, e.g., port wine stain, atypical nevi, seborrheic keratoses, basal cell carcinoma, squamous cell carcinoma, dermatofibroma, keloid, stucco-keratosis, and insect bites.
An eczematous halo occurs about a central nevus. Young adults are most commonly affected. Mild itching may be present. Multiple Meyerson's nevi have been reported in a patient with Behcet's syndrome given interferon alpha.
The nevus should be evaluated for atypia and removed if indicated although this is usually not necessary. No treatment is needed although topical steroids may be given. The condition often resolves spontaneously after several months. Sunlight has helped in a case although sunburn has triggered the MP. If persistent and bothersome, surgical excision of the nevus may be done.
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