These children have usually come into care as a result of abuse or neglect, and will have experienced adverse childhood experiences (ACEs) or some form of early trauma.
Fel arfer, mae'r plant hyn wedi dod yn rhan o'r system ofal o ganlyniad i gamdriniaeth neu esgeulustod, a byddant wedi cael profiadau niweidiol yn ystod plentyndod neu ryw fath o drawma cynnar.