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8 Types of Sibling Issues From Childhood Trauma

Patrick Teahan, MSW, identifies eight common sibling dynamics that develop within toxic family systems — from golden child vs. scapegoat roles to sibling estrangement — and explains how these patterns shape adult relationships and recovery.

By Patrick Teahan
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Sibling relationships in dysfunctional families are rarely simple. In toxic family systems, no child walks away untouched — but the ways siblings are affected, and the roles they take on, can vary dramatically. In this video, Patrick Teahan, MSW, draws from his clinical practice to identify eight common types of sibling issues that arise from childhood trauma, exploring how these dynamics develop and why they often become some of the most painful parts of a survivor's story.


Patrick explains that it's rare to find two siblings from the same abusive family who are both actively working on recovery — and that this disconnect itself is one of the central wounds. He covers dynamics including the golden child and scapegoat split, where one sibling is favored while another absorbs the family's dysfunction; siblings who become perpetrators themselves, carrying abuse forward within the family; and the heartbreak of watching a sibling stay trapped in toxic patterns without seeing it.


The video also addresses sibling enmeshment, where trauma bonds create codependent relationships between brothers and sisters; sibling estrangement, where the pain of the family system makes maintaining a relationship impossible; and the phenomenon of siblings who "drink the parental Kool-Aid" — aligning with abusive parents and invalidating the sibling who sees the truth. Patrick discusses how birth order, gender, and the specific role each child was assigned in the family system all influence which issues emerge.


For adult survivors, these sibling dynamics often translate into deep resentment, loneliness, grief over relationships that never developed, difficulty trusting peers, and confusion about loyalty and family obligation. Patrick offers insight into why siblings from the same household can have such radically different perceptions of their childhood — and why that gap can feel like its own form of betrayal.


Whether you're navigating a complicated relationship with a sibling, grieving the loss of one you've had to distance yourself from, or trying to understand why your brother or sister sees the family so differently than you do, this video provides a framework for making sense of sibling trauma and beginning to process the specific wounds it leaves behind.

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