APA Citation
Lamont, E., Harrington, C., & Dickson, J. (2019). Psychological trauma in siblings of children with medical illness or disability: A systematic review. *Clinical Child Psychology and Psychiatry*, 24(4), 702-715.
Summary
This systematic review examines psychological trauma experienced by healthy siblings of children with medical conditions or disabilities. The researchers analyzed existing studies to understand how being the "well child" in a family affects psychological development and trauma responses. They found that these siblings often experience neglect, role reversal, parentification, and complex trauma patterns similar to those seen in narcissistic family systems, where one child receives disproportionate attention while others are overlooked or burdened with adult responsibilities.
Why This Matters for Survivors
This research validates the experiences of survivors who grew up as the "forgotten child" while a sibling received intense parental focus. It demonstrates that being overlooked or parentified creates real trauma, even when parents aren't intentionally abusive. The findings help survivors understand that their feelings of neglect and responsibility burdens were legitimate traumatic experiences that shaped their development.
What This Research Establishes
Siblings of children with medical conditions experience significant psychological trauma through mechanisms including emotional neglect, parentification, and loss of normal childhood experiences while family resources focus intensively on the sick child.
Parentification creates lasting psychological impacts as healthy siblings are forced into adult roles, becoming emotional caregivers for parents and practical caregivers for their sick sibling, disrupting normal developmental processes.
These family dynamics mirror narcissistic family systems where one child receives disproportionate attention and resources while others are systematically overlooked, creating similar patterns of trauma, guilt, and suppressed emotional needs.
The trauma is often invisible and unrecognized because these children appear to be “doing fine” while internally struggling with neglect, inappropriate responsibilities, and the message that their needs don’t matter as much as their sibling’s medical condition.
Why This Matters for Survivors
If you grew up as the “healthy” or “responsible” child while a sibling had medical needs, this research validates that your experience of being overlooked was real trauma. You weren’t being dramatic or selfish for feeling neglected - you were a child whose developmental needs were sacrificed for family crisis management.
Many survivors recognize the parentification described in this study. Being expected to be the “little adult,” managing household tasks, caring for your sibling, or emotionally supporting overwhelmed parents created wounds that persist into adulthood. Your struggle with boundaries and difficulty receiving care makes perfect sense given this early conditioning.
The guilt patterns identified in this research - feeling guilty for being healthy, for having needs, for wanting attention - mirror the shame dynamics many survivors carry. These weren’t character flaws; they were adaptive responses to an imbalanced family system that taught you your worth came from self-sacrifice.
Understanding that this constitutes a form of complex trauma helps explain why you might struggle with relationships, have difficulty identifying your own needs, or feel responsible for everyone else’s wellbeing. Your hypervigilance and people-pleasing developed as survival strategies in a family system where love felt conditional on being “easy” and self-sufficient.
Clinical Implications
This research expands trauma assessment to include siblings who experienced parentification and neglect in medical families. Clinicians should screen for childhood responsibilities, emotional caregiving roles, and feelings of being overlooked when working with clients from families with medical crises or disabilities.
Treatment approaches need to address the complex guilt these survivors carry about their health, their childhood needs, and any resentment toward their sibling or parents. Validating that their neglect was traumatic, not just an unfortunate circumstance, is crucial for healing progress.
The parentification patterns identified require specific therapeutic attention to boundary development and permission to have needs. These clients often struggle to receive care and may unconsciously recreate caretaking dynamics in therapeutic relationships, requiring careful processing of these patterns.
Family systems work should address how medical crises can create narcissistic-like dynamics even in previously healthy families. Understanding how crisis can activate dysfunctional patterns helps clinicians work with the systemic trauma rather than focusing solely on individual symptoms.
How This Research Is Used in the Book
This research provides crucial validation for survivors who experienced trauma not through direct abuse, but through systematic neglect and inappropriate responsibilities in crisis-focused families. Chapter 8 explores how medical families can develop narcissistic-like dynamics:
“Sarah’s childhood was defined by her brother’s chronic illness, but the real trauma wasn’t his medical condition - it was disappearing into the role of the ‘easy child’ who never needed anything. Like many siblings in medical families, she learned that love meant self-erasure, that her worth came from being the helper, never the helped. The parentification that research identifies in these families created the same wounds as direct narcissistic abuse: the deep belief that her needs didn’t matter.”
Historical Context
Published in 2019, this systematic review emerged during a period of expanding trauma recognition beyond direct abuse to include systemic family dysfunction. It represents growing clinical understanding that children can experience significant psychological trauma through neglect, parentification, and family role distortions, contributing to the broader recognition of complex PTSD and developmental trauma that has transformed treatment approaches for adult survivors.
Further Reading
• Wells, M., & Jones, R. (2018). “Parentification and psychological adjustment in siblings of children with chronic illness.” Journal of Pediatric Psychology, 43(8), 892-903.
• Thompson, K., et al. (2020). “Long-term mental health outcomes in adult siblings of individuals with disabilities: A longitudinal study.” Developmental Psychology, 56(4), 678-689.
• Martinez, L., & Chen, P. (2017). “Family functioning and sibling adjustment in pediatric chronic illness: The mediating role of parental attention allocation.” Clinical Child and Family Psychology Review, 20(3), 334-351.
About the Author
Emma Lamont is a clinical psychologist specializing in child and adolescent trauma, with particular expertise in family systems and sibling dynamics in medical contexts.
Christina Harrington is a researcher in developmental psychology focusing on how family stressors impact child psychological development and resilience.
Julia M. Dickson is a clinical psychologist and researcher with expertise in systematic reviews and evidence-based approaches to understanding childhood trauma and its long-term effects.
Historical Context
Published in 2019, this review emerged during growing recognition of complex family trauma beyond direct abuse. It reflects increasing clinical awareness that children can experience trauma through neglect, parentification, and systemic family dysfunction, expanding understanding of how narcissistic family dynamics create multiple trauma victims.
Frequently Asked Questions
Yes, research shows that being the overlooked or parentified sibling in families focused on a sick child can create significant psychological trauma through neglect and inappropriate responsibilities.
Parentification occurs when healthy siblings are forced to take on adult responsibilities, emotional caregiving, or family management roles because parents are overwhelmed with caring for the sick child.
Both situations create imbalanced family systems where one child receives intense attention while others are neglected, parentified, or expected to suppress their needs for the family's sake.
Research indicates these children often develop hypervigilance to others' needs, self-sacrifice patterns, and difficulty expressing their own needs - similar to children of narcissistic parents.
Studies show that siblings who experienced parentification and neglect often struggle with boundaries, codependency, and difficulty receiving care in adult relationships.
Yes, these siblings frequently experience survivor guilt, guilt about their health, and guilt about having normal childhood needs that compete with their sibling's medical needs.
Narcissistic parents may use a child's illness to gain attention and sympathy while simultaneously neglecting other children's emotional needs or over-parentifying them.
Trauma-informed therapy addressing complex PTSD, family systems work, and approaches that validate the survivor's experience of neglect and parentification are most effective.