Factitious Disorder

Clinical picture

• Illness is manufactured by fabricating history, exaggerating findings, contaminating specimens, injecting insulin or feces, or interfering with wound healing.
• Histories are fluent and textbook-consistent, often supported by real medical knowledge, and details shift when records from other institutions arrive.
• Patients accept painful and invasive procedures readily, and symptoms characteristically escalate as discharge or resolution approaches.
• Care is fragmented across many hospitals and specialists, with reluctance to permit release of records or contact with previous treating clinicians.
• The reward sought is care, attention, and identity as a patient rather than money, medication, or avoided obligation, which separates it from malingering.
• Iatrogenic harm is the leading cause of morbidity, through repeated surgeries, line sepsis, anticoagulation, and cumulative radiation exposure.

Criteria snapshot

• Physical or psychological signs or symptoms are falsified, or injury or disease is actively induced, in association with identified deception.
• The person presents themselves, or presents another individual, to others as ill, impaired, or injured across medical or psychiatric settings.
• The deceptive behavior is evident even without any obvious external reward, which distinguishes the disorder from malingering rather than from illness.
• The presentation is not better explained by another mental disorder such as delusional disorder or another psychotic disorder held with conviction.
• Specify single episode or recurrent; in the imposed on another variant, the diagnosis belongs to the perpetrator while the victim receives an abuse code.

Neurobiology

• No biomarker or imaging finding establishes the diagnosis, and reported frontal or white matter abnormalities in case series remain nonspecific.
• Laboratory pattern recognition supplies the objective evidence: high insulin with suppressed C-peptide, undetectable TSH with normal thyroid, or absent drug metabolites.
• Induced disease produces genuine pathology, so hypoglycemia, sepsis, anemia from covert phlebotomy, and surgical complications are real and can be fatal.
• Childhood illness, prolonged hospitalization, abuse, neglect, and early loss are overrepresented, as is employment or training in a healthcare occupation.
• Personality pathology, particularly borderline and narcissistic organization, is the dominant substrate rather than any discrete neurobiological lesion.
• Mortality is meaningful and arises from self-induced disease, complications of unnecessary intervention, and suicide, so this is not a benign condition.

Psychology

• The sick role supplies structure, nurturance, legitimacy, and control that ordinary relationships have not reliably provided for these patients.
• The behavior is intentional while the motivation is largely outside awareness, and holding both facts at once is what makes clinical management possible.
• Attention from caregivers is a powerful reinforcer, so each successful admission increases the likelihood and the intensity of the next presentation.
• Direct confrontation typically produces flight, escalation, complaint, or suicidal crisis rather than confession, and it ends the therapeutic opportunity.
• Countertransference of anger, betrayal, and detective-like scrutiny is the main threat to safe care and should be named explicitly in team discussion.

Differential & comorbidity

• Somatic symptom disorder and functional neurological disorder involve genuine unfeigned symptoms with no falsification, and carry no deception criterion.
• Malingering is intentional falsification for tangible external gain such as money, opioids, housing, or avoided duty, and is not a mental disorder.
• Delusional disorder somatic type involves fixed false belief rather than knowing fabrication, and responds to antipsychotic rather than behavioral management.
• Borderline personality disorder, depression, substance use disorder, and chronic pain are the usual comorbidities, alongside repeated self-harm.
• Rare genuine disease must be re-excluded periodically, since a factitious diagnosis does not confer immunity from developing real illness later.

Pharmacologic treatment

• No medication treats falsification itself, so prescribing addresses comorbid depression, anxiety, and affective instability rather than the behavior.
• SSRIs are reasonable for comorbid mood and anxiety disorders, with realistic expectations that the presenting behavior may persist unchanged.
• Avoid opioids, benzodiazepines, and any divertible or self-administrable agent, including insulin, anticoagulants, and injectable medications.
• Reconcile the medication list across every institution involved, since polypharmacy accumulated from unnecessary treatment causes its own harm.
• Antipsychotics have no role unless a comorbid psychotic disorder is independently established on its own diagnostic grounds.

Psychotherapy

• No randomized trials exist; long-term supportive or psychodynamic therapy with one consistent clinician is the best-described approach.
• Face-saving techniques such as inexact interpretation reframe the behavior as a communication of distress and preserve the alliance without demanding confession.
• DBT-informed work targets self-harm, emotion dysregulation, and the interpersonal patterns that drive care-seeking through illness.
• Motivational and harm-reduction framing accepts partial engagement, since insistence on full disclosure predicts dropout in nearly every case series.
• Set the treatment goal as reduced medical harm and increased non-illness sources of connection, not as elimination of deception.

Adjunct options

• Assign one care coordinator and one medical home, and route all new complaints through that person to prevent parallel workups.
• Consolidate records across health systems, flag the case in the electronic record with ethics and legal input, and document diagnostic thresholds in advance.
• Limit invasive investigation by agreeing beforehand on what findings would justify escalation, which protects the patient more than vigilance does.
• Involve risk management and ethics before covert surveillance, room searches, or specimen testing, since these carry legal and consent implications.
• For factitious disorder imposed on another, report to child protection immediately, review the medical records of all siblings, and involve child abuse pediatrics.

Clinical pearls

• The act is intentional; the motive is not. Confrontation ends care and rarely ends the behavior.
• One medical home, consolidated records, and pre-agreed testing thresholds beat any prescription.
• Factitious disorder imposed on another is child abuse: report it, and check the siblings.