Factitious disorder imposed on another
Factitious disorder imposed on another (FDIA), formerly Munchausen syndrome by proxy, is fabrication, exaggeration, or direct induction of illness in a dependent, usually a child, by a caregiver seeking the concerned-caregiver role; the psychiatric diagnosis attaches to the caregiver, while the dependent is the one harmed. It is a form of abuse, so management leads with separating the child from the perpetrator, mandatory reporting to child protective services, and evidence preservation, before any psychiatric treatment of the caregiver.
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What this article covers
- Overview
A caregiver-driven illness fabrication: factitious disorder imposed on another (FDIA), formerly called Munchausen syndrome by proxy, occurs when a caregiver directly causes illness in a dependent…
- Epidemiology
Dependents most affected are children: the target is most often a child, though disabled or older adults dependent on another for care are also seen.
- Risk factors
Caregiver history of abuse: a personal history of child abuse in the caregiver raises risk of perpetrating maltreatment, including FDIA.
- Pathophysiology
Primary, internal gain drives the behavior: the motivation is unconscious to the caregiver rather than a deliberate strategy for an identifiable reward, distinguishing it from malingering, where…
- Clinical features
No formal symptom-count or duration criteria: unlike mood or anxiety disorders, FDIA is a caregiver pattern of exaggerating, falsifying, or inducing illness to occupy the caregiver role, and the…
- Differential diagnosis
Genuine, organic illness in the dependent: an unusual disease can mimic a fabricated picture, but findings are internally consistent and reproducible on independent testing, without a caregiver history that outpaces the evidence.
- Diagnosis
The diagnosis rests on identifying the caregiver's pattern of fabrication, exaggeration, or induction, corroborated by objective evidence, not a single test: an inconsistent history across providers…
- Management
First, ensure the dependent's immediate physical safety and treat any acute harm: separate the dependent from unsupervised access to the suspected perpetrator, and address any genuine medical or…
- Complications
Direct physical harm or death from induced illness: repeated induction of symptoms, or acts such as abusive head trauma, can cause lasting injury or death.
- Prognosis
Outcome depends on removing the caregiver's access, since the caregiver is the source of the illness: fabricated or induced findings are expected to stop once genuine separation from the perpetrator is achieved and sustained.
- Prevention
Mandatory reporting is the primary preventive system: any reasonable suspicion must be reported, the duty applies up to age 18, and the system is intentionally sensitive rather than specific, so some…
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