The Frequency of Bronchial Asthma in Children Under 5 Years of Age

Abstract

Bronchial asthma (BA) is a disease based on a chronic inflammatory process in the bronchial tree, characterized by migration and infiltration of mast cells and eosinophils of the mucous membrane, regulated by Th2 lymphocyte cytokines. It seems that asthma in children is the result of the interaction of genetic predisposition and factors acting on the child’s body in perinatal and early childhood. The article presents current data on the main endogenous and exogenous risk factors for the development of asthma in children.