“Disorganized attachment results when frightening or abusive parental behavior places infants in an irresolvable conflict: the desire to move toward the caregiver and flee from the source of fear, when they’re one and the same person."

"This activates two brain circuits simultaneously. The attachment circuitry screams out: ‘Go to my attachment figure for protection!’ Yet, at the same time, an even older circuit of survival screams, ‘Get away from this source of terror!’ The same person triggers approach and avoidance, and the infant’s capacity for an organized response collapses."

"This relational experience predicts the disorganized pattern of attachment in several studies. Further, this 'disorganized’ infant attachment pattern predicts later dissociative symptoms up to age 26 (and even borderline personality symptoms at age 28).”

— The Verdict Is In - Dr. Dan Siegel

(Quote spaced out for easy reading for the eyes)