Factitious disorder — known widely by the historical term Munchausen syndrome — is a psychiatric condition in which a person deliberately fabricates, exaggerates, or induces physical or psychological symptoms in themselves, not for any external gain, but to assume the role of a sick person and receive medical attention, care, and treatment.
This is what distinguishes factitious disorder from malingering: the person is not simulating illness to obtain financial compensation, avoid legal consequences, or achieve any identifiable external goal. The motivation is the medical environment itself — the attention, the procedures, the relationships with healthcare providers, the sense of being cared for — all of which serve a psychological function that the person cannot meet through other means.
Factitious disorder is rare, frequently misdiagnosed, and one of the most clinically complex presentations in psychiatry. It may go unrecognised for years, during which the patient accumulates unnecessary diagnoses, invasive procedures, and treatments for conditions they do not have.
Factitious Disorder Imposed on Self (FDIS) — referred to historically as Munchausen syndrome — involves the deliberate falsification of physical or psychological signs and symptoms in oneself. The person may fabricate symptoms verbally, tamper with laboratory tests, self-induce physical findings, or manipulate medical records. They often present with elaborate, medically convincing histories and may seek out multiple healthcare providers simultaneously — a behaviour known as doctor shopping.
Factitious Disorder Imposed on Another (FDIA) — referred to historically as Munchausen syndrome by proxy — involves the deliberate fabrication or induction of illness in another person in the care of the perpetrator, most commonly a child. FDIA has significant safeguarding and legal implications and requires immediate multidisciplinary response.
Factitious disorder must be carefully distinguished from somatic symptom disorder — where physical symptoms are real but medically unexplained — and from conversion disorder, malingering, and hypochondria, each involving a different relationship to illness and a different treatment approach.
The clinical picture of factitious disorder is often notable for its complexity, inconsistency, and the degree of medical sophistication it involves.
Common features include symptoms that are dramatic and difficult to verify objectively; a history that is inconsistent, changes across different providers, or cannot be corroborated; extensive prior medical workup with negative or inconclusive findings; familiarity with medical terminology disproportionate to the patient's stated background; eagerness for diagnostic tests and procedures; symptoms that worsen inexplicably under observation; history of multiple hospitalisations in different institutions; and significant deterioration when discharge is proposed.
The psychological substrate typically involves significant identity disturbance, difficulty tolerating ordinary life demands without the structure the sick role provides, and often a history of early relational trauma, neglect, or disruption.
Diagnosing factitious disorder is one of the most clinically demanding tasks in psychiatry. It cannot be made on the basis of a single consultation, and cannot be confirmed by exclusion of organic illness alone. It requires longitudinal observation, thorough review of all available medical records from multiple institutions, and a carefully conducted psychiatric assessment exploring the patient's history, psychological structure, and the function that illness behaviours serve.
The diagnosis should be approached with particular sensitivity. Confrontational disclosure is associated with patient disengagement and deterioration — the goal is not to expose the patient but to open a pathway toward understanding the psychological needs underlying the behaviour.
At IsraClinic, assessment involves a comprehensive psychiatric interview, review of available documentation, psychological assessment, and collegial clinical discussion before any conclusions are formulated. Where FDIA is suspected, the assessment process immediately involves the relevant child protection and legal authorities.
Factitious disorder is one of the more treatment-resistant conditions in psychiatry. The person's relationship to the sick role is deeply embedded and serves significant psychological functions — confronting or removing it without addressing the underlying needs typically results in disengagement or a shift to new medical providers.
Treatment, where the patient can be engaged, is primarily psychotherapeutic. Establishing a stable, consistent, non-confrontational therapeutic relationship — within which underlying psychological needs can be gradually explored — is the central clinical task.
Schema therapy and psychodynamic psychotherapy are particularly relevant for the deeper personality-level work factitious disorder typically requires. Supportive psychotherapy provides a framework for sustained engagement where deeper exploratory work is not yet possible.
Treating co-occurring conditions — depression, anxiety, personality disorders — is an important component of clinical management.
FDIA — historically Munchausen by proxy — involves a victim who is typically a child or dependent adult. Where FDIA is clinically suspected, the immediate priority is the safety of the affected person, and the response involves not only psychiatry but child protection services, legal authorities, and paediatric medicine.
IsraClinic can contribute to the psychiatric assessment component of such cases within the appropriate multidisciplinary framework.
Factitious disorder is most commonly identified not by the patient themselves but by concerned clinicians or family members who notice inconsistencies in the medical picture over time.
If you are a healthcare provider or family member concerned about a pattern of unexplained illness, repeated hospitalisations, or medically inconsistent presentation in yourself or someone in your care — specialist psychiatric assessment is appropriate.
IsraClinic accepts patients for in-person consultation in Tel Aviv and online, in English, Russian and Hebrew. No referral is required.
Clinical Reviewer: Dr. Mark Zevin, MD — Senior Psychiatrist | IsraClinic | Last reviewed: 2026
Factitious disorder is rarely self-referred — it is more often identified by those around the patient. If you have concerns, specialist assessment is available in English, Russian and Hebrew.