A follow up of 427 children suffering from bronchial asthma (BA) determined that a prominent increase in the number of concomitant diseases is directly proportional to the extent of BA severity, mainly due to vegetative dysfunctions and allergic rhinitis, and practically does not depend on the age of patients. Different incidence of concomitant pathology is registered in different age groups: in children under the age of 6 years the incidence rate of аtopic dermatitis is relatively high, in 7–11 years’ children dyskinesia of billiary ducts takes place, whereas vegetative dysfunctions and inflammatory diseases of nasopharynx prevail at the age of 12–14 years.
