INTRODUCTION
Halo Nevi (HN) or Sutton’s nevi, are nevomelanocytic lesions surrounded by a ring of depigmentation. HN typically occur in adolescence and may affect 1% of the population.1 Sometimes they herald the disappearance of the nevus over time, and this process may take 10 years or longer.1 They have also been associated with the development of vitiligo and more rarely, with the development of melanoma in adults.2,3 Usually, HN will occur alone or in limited numbers, but there are rare cases of patients presenting with multiple lesions.4 We report the case of a 38-year-old male who presented to our practice with multiple newly developed halos around existing melanocytic nevi on his trunk. The halos began after the patient, who lived in the northeast, spent 2 months on a lake in Alabama, with intense heat and sun exposure. The phenomenon of multiple halo nevi developing after intermittent intense sun exposure has been previously reported in an adolescent Japanese male,4 but not in a Caucasian adult male, making this case rather unique and adding to the evidence that solar radiation is a contributing factor in the development of HN.
A complete skin examination was performed, and no atypical melanocytic lesions were notable. Our patient was advised to limit sun exposure, obtain an ophthalmologic examination, and monitor for new changes in the lesions at regular skin
Clinical Findings
Our patient is a 38-year-old male who was born with blaschkoid pigmentation of the left lower extremity, extending from his L buttock to his lower leg. He had several common nevi on his trunk and returned to the office for yearly skin examinations. In September 2020, the patient presented after a summer vacation that included intermittent intense sun exposure with the congruent development of 26 HN distributed across his upper and lower back and abdomen. (Figure 1, 2).
A complete skin examination was performed, and no atypical melanocytic lesions were notable. Our patient was advised to limit sun exposure, obtain an ophthalmologic examination, and monitor for new changes in the lesions at regular skin
