[Risk factors for allergic bronchial asthma].

The paper deals with the current data on aetiological factors of allergic bronchial asthma. The cause of allergic bronchial asthma is unknown. In general, endogenous and environmental factors are though to play a certain role in its development. Early contact with allergic agents, air pollution, tobacco smoking and infective agents (viruses), are considered to be environmental factors. Endogenous factors are heredity of allergic diseases and special susceptibility for bronchial asthma.