Almost everyone has one or more pigmented lesions on their skin called birthmarks, nevi, or moles.. A birthmark in a child can exist from birth or appear at any age. In the first case, it is considered congenital, in the second - acquired. Most of the skin pigmented neoplasms are benign and do not require special treatment, but only observation over time, according to Pannochka, an Internet publication for girls and women from 14 to 35 years old.. net Moles in babies can occur for various reasons, and most of them are not dangerous Why moles appear in a child Nevi are formed on the skin from special pigment cells - melanocytes, which are located between the inner layer of the skin called the dermis and the superficial layer of the epidermis. There are several main reasons for their occurrence..

Etiological factor.

Characteristic.

Heredity.

The appearance of nevi in \u200b\u200ba specific place on the body can be programmed into the human DNA. This is a certain defect that formed at the stage of embryonic development and is caused by a violation of the process of movement of melanoblasts - precursors of melanocytes, from the neuroectodermal tube into the skin. The accumulation of pigment cells in the skin is the basis for the appearance of nevi.

Hormonal Disorders.

Changes in hormonal levels (puberty) and imbalance in the work of endocrine organs (stress loads, endocrine pathologies) are often factors that provoke the formation of nevi.

Ultraviolet spectrum radiation.

One of the important functions of the melanin pigment produced by melanocytes and accumulated in them is the absorption of ultraviolet (UV) rays. Thanks to this, the deep layers of the skin are protected from radiation damage.. With excessive exposure to UV rays, melanin is produced more intensively, which, in turn, provokes the formation of birthmarks. Prolonged sunbathing and frequent visits to the solarium can lead to the fact that existing birthmarks begin to grow and new birthmarks appear..

Decreased body resistance.

Immunodeficiency states provoke the appearance of moles. Many formations containing pigment can appear on the skin after acute inflammatory bullous dermatoses, exposure to radiation, X-rays. Injuries, viral infections that reduce the body's defenses, contribute to the fact that new and existing nevi appear and grow.

Different types of birthmarks in a child All nevi in \u200b\u200bchildren can be divided into two large groups: dangerous in relation to the development of melanoma - a malignant tumor that develops from melanocytes, and melanomone-dangerous. The ratio of the former to the latter is 1:10.

neboleem. net.