The results of immunotherapy in 244 children with asthma or allergic rhinitis have been evaluated by means of a questionaire directed at the parents. 86,9% of the children showed improvement. Additional information has been obtained about the side-effects of therapy--2,9% regularily showed dyspnoea--, the severity of symptoms before treatment and the influence of age on the above mentioned parameters. The results are discussed, compared with similar studies in adults and possible consequences for future diagnostic measures and therapy are proposed.