In this study, the authors discuss whether there are any differences in the acquired factors, such as psychosocial factors, related to the age at the onset of psychosomatic disorders, and whether or not there are any characteristics which can be considered unique to Japanese asthmatic patients. Many firstborns were found in those whose onset age was below 10 or in their teens. In those patients who had the onset of asthma in their 20s or 30s many women suffered problems with their mother-in-law after marriage or with their husbands who were interested only in work. We have also discussed that behind these phenomena, problems of parent-child relationship in early childhood were hidden.