This paper revisits, from a relational viewpoint, the concept of ideal
ization. The context is that of therapy with families with an adolesce
nt or young adult affected by a severe mental disorder. We examine one
possible familial risk factor: a shared distortion of reality, the ph
enomenon by which not only the patient but often several other family
members misperceive the psychological equilibrium or affective involve
ment of one or more members of the family. Our attention to this risk
factor extends to a wider hypothesis, one that sees the familial facto
rs co-responsible for severe mental disorders in terms of the transmis
sion of relational suffering in a three-generational process.