The concept of borderline state follows upon concepts of developmental heterochronicity (A. Freud) and developmental dysharmony (R. Mises). It can be found today under the heading of MDD (Multiple Developmental Disorder) in the child and adolescent, and the presence of MSDD (Multi-System Developmental Disorder) may be an early sign of it in the very young child. What is the continuity between these distortions of the baby’s interactions and adolescent borderline pathologies?

Adolescence, 2015, 33, 4, 771-778.