Concepts of the psychoanalytical object relationship theory, in partic
ular McDougall's concept of ''one body for two''. are described and an
alyzed using clinical case material. The mother-child relationship of
young people afflicted with diabetes mellitus is examined. Special att
ention is given to any inability of the mother in supporting the child
's requirement for autonomy as described by McDougall (1987) in her an
alysis of psychosomatically ill patients. A case study is presented, w
hich illustrated that the occurrence of a chronic, somatic illness in
adolescence can initiate or regressively reactivate previous pathologi
cal mother-child relationship patterns.