Parricide and Mental Health Disorders
Summary
Parricide, the act of an offspring killing one or both parents, represents a rare yet profoundly disturbing form of homicide. Across diverse cultural and legal contexts, research consistently indicates that severe mental health disorders, particularly schizophrenia spectrum conditions and affective disorders, feature prominently among offenders. Clinical presentations often include psychotic symptoms such as delusional misidentification and persecutory beliefs, which may distort familial relationships and precipitate fatal violence. In other cases, cumulative factors including chronic familial abuse, impaired social support and untreated psychiatric illness converge to elevate risk. Epidemiological studies suggest that young adult males constitute a significant proportion of parricide perpetrators, frequently acting alone within the parental home and using readily available instruments. In many instances the violence is characterised by overkill, reflecting profound psychopathology and emotional dysregulation. Data‐driven typologies have classified offenders into subgroups—those with longstanding psychotic illness, individuals subjected to past abuse and those with affective instability—highlighting the heterogeneity of motivations and clinical profiles. Understanding these interconnections offers pathways for early identification of high‐risk cases, targeted mental health interventions and liaison between psychiatric services and social care providers to mitigate fatal outcomes.
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Parricide and Mental Health Disorders publication trend
The graph below shows the total number of articles in parricide and mental health disorders across all publications each year (not limited to Nature Index journals).
Technical terms
Parricide: The homicide of a parent by their child or stepchild.
Delusional misidentification: A psychotic phenomenon where familiar individuals are perceived as impostors.
Psychopathy: A personality disorder marked by lack of empathy, shallow affect and antisocial behaviour.
Overkill: Excessive force used in homicide, often indicating extreme emotional or psychotic disturbance.
Undoing: Post‐offence symbolic behaviour aimed at alleviating guilt or reversing the act psychologically.
References
- Patricide and overkill: a review of the literature and case report of a murder with Capgras delusion. Forensic Science, Medicine and Pathology (2020).
- The typology of parricide and the role of mental illness: Data‐driven approach. Aggressive Behavior (2020).
- Psychopathology, psychopathy, body management, and undoing in youthful parricide offenders. Journal of Forensic Sciences (2024).
- Mental Illness and Parricide. A Case Report of Patricide. BRAIN - Broad Research in Artificial Intelligence and Neuroscience (2023).
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