This paper is to clarify a correlation between obsessive-compulsive neurosis and the family system. It is recognized that there is a skew in the structure of the family which contains a member with a mental disease and that the system of the family does transform the whole state of it, so as to take away the skew in it, with that the patient’s condition getting better or worse.
In this case, a girl of thirteen showed various obsessive-compulsive conditions after she had receive many "arrows of control" from other family members consisting of her parents and brother. Then the family system went near breaking off for their discords, when parents made peace for a while, starting to depend on the outer help.
Our interventions based on the flow of system change (feedback loops) and on the energy needs for system-changing. This attempt worked on her efficiently.