DOI: https://dx.doi.org/10.18565/pharmateca.2018.s1.52-56

V.V. Mordovtseva (1), Yu. Yu. Sergeev (2)

1) Moscow State University of Food Production, Moscow, Russia; 2) Society of Dermatoscopy and Optical Skin Diagnostics, Moscow, Russia
Halo phenomenon is described as a rim of depigmentation around a variety of skin lesions with different histogenesis. Most frequently it has been reported in cases of melanocytic nevi with an estimated frequency of 1%. Focal depigmentation of hair (leukotrichia, poliosis) represents the rare clinical presentations of halo phenomenon and can be the only clinical sign of halo nevi. A case-report of halo nevus, located on the scalp and manifested by local leukotrichia, as well as report of halo phenomenon around the nevus sebaceous of Jadassohn are described in the article. A review of the literature on halo phenomenon is given in the article, differential diagnosis of leukotrichia is discussed.
Keywords: halo phenomenon, halo nevus, Suttons nevus, nevus sebaceous, dermatoscopy, regression, leukotrichia, poliosis

About the Autors

Corresponding author: Yu.Yu. Sergeyev – Member of the Board of the Society for Dermatoscopy and Optical Skin Diagnostics, Moscow, Russia; e-mail: tosergeev@gmail.com

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