The growth of children with asthma has attracted great interest because it is a chronic respiratory illness whose prevalence in childhood has increased during the last decades. The relationship between asthma and growth has been studied for a long time, but the great variability of diagnosis, therapy, and different methods of investigation make it difficult to disentangle the factors that are responsible for the growth retardation detected by some authors. As a result of different observations, there remain many doubts about the impact of asthma on child and adolescent growth. The aim of this paper is to provide a general view on the issue.