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See no evil, hear no evil? the role of psychiatry in exorcism

Declan Christopher Lyons, Mohammed Al Hassan, Shahzeb Shahid, Ruairi Nevin-maguire, Luke Reilly, F.s.l. Lyons

Irish Journal of Psychological Medicine December 26, 2025 Peer reviewed DOI: 10.1017/ipm.2025.10160 via OpenAlex

Summary

Beliefs in evil spirits and exorcism practices have persisted throughout history, with some psychological and physical conditions attributed to demonic possession. While traditional remedies like exorcism exist, mental health treatments such as medication and psychotherapy are often recommended instead. The rise of non-denominational Christian churches accepting possession complicates the understanding for culturally competent mental health professionals, who may struggle to differentiate between possession and mental illness. This paper discusses the diverse perspectives and cautions surrounding this issue.

Study at a glance

Key finding The paper highlights the complexity and contention in differentiating between beliefs in possession and mental illness among culturally competent mental health professionals.

Abstract

Beliefs in evil spirits and the practice of deliverance from supernatural forces have been widespread throughout history. Many psychological and physical afflictions have been attributed to involuntary demonic possession. Traditional remedies, for those reporting inhabitation by evil spirits, can involve exorcism believed to expel such forces. Similar beliefs may be symptomatic of major mental illness and treatments namely medication and psychotherapy, are frequently recommended. An increasingly secular western world is also seeing growth in non-denominational Christian churches and other faiths, who accept spirit possession and exorcism. Culturally competent mental health professionals, seeking to understand their patients' world view, may struggle with exorcism, seeing it as an interference to conventional treatment. They may be being unwilling thus to attempt differentiation between possession and mental illness. This paper explores the diversity of views on this topic and points of contention and overlap. The risks and cautions necessary in approaching this issue are stressed.

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