Reasons and risk factors of the combined pathology inchildren

In a review modern looks are presented to reasons of comorbidity for children. A structure and reasons of combined pathology for children have substantial differences from such for adults. Main reasons of the combined pathology for children: genetic, perinatal, social, alimentary and ecological factors. Enumerated groups intersect often. Comorbidity for children has age-dependent dynamics, thus time of influence of causal factor and time of realization of pathology can be remote from each other.