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Halo Nevus

This lesion is a nevomelanocytic nevus that is encircled by a halo of leukoderma or depigmentation. The leukoderma is abjectd on a decraffluence of melanin in mclunocytes or disappearance of melanocytes at the dermal-epidermal junction. Halo nevi often undergo spontaneous involution, of ten with regression of the centrally located pigmented nevus.

Halo birthmarks are not uncommon and are usually apparent in children or young adults of either sex. Generally, a halo nevus does not accept to be removed unbeneath it has atypical features. Removing the nevus does not cause the halo portion to get aphoticer. For this reason, remegg can cause a noticeable scar in an breadth of lighter bark color.

Causes of Halo nevus

Immunologic phenomena are responsible for the dynamic changes through the action of circulating cytotoxic antibodies and/or cytotoxic lymphocytes. This phenomenon awaits a reevaluation with newer techniques.

Signs and symptoms of Halo nevus

Papular countenancen NCN (5 mm) with halo of sharply marginated hypomelanosis. The nevus is centrally located. egg or round hypomelanosis. Scattered discrete lesions (1 to 90).

Diagnosis

If clinical findings atypical: the nevus has variegation of color and/or irregular border, conclose histologically.

Treatment of Halo nevus

If you accept a halo birthmark, get your dermatologist or doctor to check it. Halos can be apparent as allotment of a added generalized pigment loss, vitiligo , or in melanoma.

Prevention of Halo nevus

• Sunscreen should be applied to all the bark duarena summer to prevent sunbake .
• If you accept a halo nevus and you accept another birthmark that is changing, you charge to be evaluated by your doctor immediately.