Background: Parental mental disorders in families are frequently accompanied with other problems. These include family life, the development of children, and the social and economic environment. Mental health services often focus treatments on the individual being referred, with little attention to parenting, the family, child development, and environmental factors. This is despite the fact that there is substantial evidence to suggest that the children of these parents are at increased risk of developing a mental disorder throughout the course of their lives. Young children are particularly vulnerable to environmental influences given the level of dependency in this stage of development. Objective: The main objective of this study was to identify whether there were a complexity of problems and risks in a clinical sample of patients and their young children (0–6) in mental health care, and, if so, whether this complexity was reflected in the integrated treatment given. Methods: The data were collected for 26 risk factors, based on the literature, and then subdivided into the parental, child, family, and environmental domains. The data were obtained from the electronic case files of 100 patients at an adult mental health service and the corresponding 100 electronic case files of their infants at a child mental health service. Results: The findings evidenced a notable accumulation of risk factors within families, with a mean number of 8.43 (SD 3.2) risk factors. Almost all of the families had at least four risk factors, more than half of them had between six and ten risk factors, and a quarter of them had between eleven and sixteen risk factors. Furthermore, two-thirds of the families had at least one risk factor in each of the four domains. More than half of the families received support from at least two organizations in addition to the involvement of adult and child mental health services, which is also an indication of the presence of cumulative problems. Conclusion: This study of a clinical sample shows clearly that the mental disorder among most of the patients, who were all parents of young children, was only one of the problems they had to deal with. The cumulation of risk factors—especially in the family domain—increased the risk of the intergenerational transmission of mental disorders. To prevent these parents and their young children being caught up in this intergenerational cycle, a broad assessment is needed. In addition, malleable risk factors should be addressed in treatment and in close collaboration with other services.