What is Halo Nevus?

Halo Nevus is a benign skin lesion that is commonly found in children, but can be found in individuals of any age. In fact, it is a mole surrounded by an area of ​​white halo. These moths appear equally in both men and women and are merely cosmetic abnormality. Treatment is not necessary because it is benign. This skin condition is a variant of melanocyte nevus, a skin lesion that contains melanocytes or pigment cells. In Halo Nevus there is lymphocytic infiltration surrounding Nevus. The infiltrate is responsible for the depigmentation zone, which is an area of ​​white halo surrounding Nevus.

Although the exact cause of this skin lesion is unknown, many scientists have tried to explain their immunological mechanism. Infiltrating cells consist mainly of T-lymphocytes that include Lymphocytes of CD8 and CD4. There are also scattered macrophages in the White Halo area. Melanocytes are completely missing in the white halo area. The role of T-lymphocytes in the absence of melanocytes is not yet clear, but it is likely that T-lymphocytes attack and kill melanociesyou.

Halo Nevus is usually free and is most often seen on the trunk, especially on the back. In some cases it can be more and can be found anywhere on the body. Nevus appears to be round or oval. It can be evenly colored as brown, pink or tanned and is centrally located in the surrounding halo. The width of Halo surrounding Nevus is variable, but its radial distance from Nevus is generally consistent.

Central Nevus may persist or disappear over months or years, with the White Halo area remaining behind. Its color does not have to change, can become irregular or turn into pink or red. Disappearances also possible nevus with Halo repigmentation. Halo, however, persists in most cases.

Halo does not create any symptoms and no treatment is required. However, any atypical appearance or irregularity guarantees excision on histological examination to eliminateSo Malignita. It is important that the doctor asked patients with halo nevus about the past medical history or a family history of atypical UVI, malignant melanoma and vitiligo. Individuals with Halo Nevus must be monitored annually for complete skin examination to ensure that atypical pier or malignant melanoma has not developed. The daily use of sunscreen is also supported.