Eduovisual
Behavioral Health
Factitious disorder and malingering: distinction and management
— Factitious disorder (FD): intentional falsification of symptoms/signs without external incentive; the motivation is the sick role itself (psychological gain — care, attention, identity as patient).
— Malingering: intentional feigning for an obvious external incentive — disability payments, opioids, housing, avoiding work/military/court, lawsuit.
— Factitious disorder imposed on another (FDIA): falsification in a victim (commonly a child or dependent adult); the perpetrator is the patient in DSM-5-TR.
— Falsification of physical/psychological signs or induction of injury/disease.
— Presents self (or another) as ill, impaired, or injured.
— Deceptive behavior evident even without obvious external reward.
— Not better explained by another mental disorder (e.g., delusional disorder).
— Inconsistent history; symptoms worsen when observed; multiple hospitalizations at different facilities ("hospital hopping"); eagerness for invasive testing.
— Healthcare worker, prior extensive medical knowledge, or pseudologia fantastica.
— Discrepancy between subjective complaints and objective findings (e.g., normal labs/imaging despite dramatic presentation).
— Symptoms appear during pending litigation, disability evaluation, or incarceration → malingering.
Board pearl: The single most useful initial question is "What does the patient stand to gain externally?" — clear external incentive = malingering; sick role only = factitious disorder.
— Recurrent admissions with dramatic, atypical, or textbook-perfect presentations.
— Symptoms that shift or escalate when workup is negative ("symptom migration").
— Willingness — even enthusiasm — for painful, invasive, or risky procedures (endoscopy, surgery, central lines).
— History of working in healthcare (nurse, tech, EMT) or extensive medical vocabulary.
— Pseudologia fantastica: elaborate, partly true, dramatic stories (terminal cancer of a relative, military trauma, celebrity acquaintances).
— Munchausen syndrome = severe, chronic FD with hospital wandering and false identities (older eponym; DSM uses FD).
— Self-induced hypoglycemia (insulin/sulfonylurea), infection (injecting feces/saliva → polymicrobial abscess), anemia (self-phlebotomy), hyperthyroidism (exogenous levothyroxine), seizures (psychogenic non-epileptic), hematuria (pin-prick into urine), wound dehiscence.
— Psychological FD: feigned PTSD, psychosis, bereavement, or memory loss.
— Symptoms tightly linked to a deadline or incentive (court date, disability hearing, parole, end-of-shift discharge).
— Refuses diagnostic workup that might disprove illness; endorses every symptom on review of systems ("symptom over-endorsement").
— Pain "10/10" but eating, texting, laughing.
— Requests specific controlled substances by name and dose; "allergic" to non-opioid alternatives.
— Recurrent unexplained illness in a child resolving when separated from caregiver.
— Caregiver overly involved, medically knowledgeable, encourages procedures.
— Sibling with unexplained death or chronic illness.
— Lab/clinical findings inconsistent with biology (e.g., mixed-flora blood cultures, electrolytes that can't coexist).
Key distinction: In FD, the deception is the goal-adjacent behavior to obtain the sick role; in malingering, deception is instrumental to a tangible external prize. Ask: "If hospitalization gave them nothing tangible, would they still do this?" — Yes → FD; No → malingering.
— Hoover sign: in feigned leg weakness, contralateral hip extension is felt when the patient flexes the "good" hip against resistance — confirms preserved strength.
— Give-way weakness (ratchety, inconsistent effort) rather than smooth pyramidal weakness.
— Astasia-abasia: bizarre, near-falling gait that never actually results in injury — suggests functional/feigned etiology.
— Sensory loss with exact midline splitting including vibration over the sternum/frontal bone (anatomically impossible — bone conducts across midline).
— Tubular visual fields that don't expand with distance (true field expands with testing distance).
— Wounds in geometrically accessible locations (dominant-hand reachable areas), linear/angular borders, sparing the back/posterior thighs.
— Non-healing wounds that improve only with occlusive dressings preventing access.
— Dermatitis artefacta: sharply demarcated lesions appearing overnight.
— Tachycardia from sympathomimetic ingestion, "fever" from rubbing thermometer or warming, hypotension from holding breath/Valsalva or beta-blocker misuse.
— Discrepancy between temperature and pulse (true fever raises HR ~10 bpm per °F) — a "fever" without tachycardia suggests manipulation.
— Use continuous monitoring and witnessed temperature with calibrated rectal probe when factitious fever suspected.
— Observe the patient unaware (rounds at unusual times) — symptoms often resolve when unobserved.
— Waddell signs in low back pain (superficial tenderness, simulation pain on axial loading, distraction inconsistency, regional non-anatomic weakness, overreaction) — historically used for non-organic pain; not specific but a clinical aid.
Step 3 management: Document objective findings precisely and avoid confrontation at the bedside before consultation — premature accusation increases liability and elopement risk.
— Factitious hypoglycemia: glucose, insulin, C-peptide, proinsulin, sulfonylurea/meglitinide screen, beta-hydroxybutyrate.
— Insulin↑ + C-peptide↓ → exogenous insulin (factitious).
— Insulin↑ + C-peptide↑ + positive sulfonylurea screen → surreptitious sulfonylurea.
— Insulin↑ + C-peptide↑ + no sulfonylurea → insulinoma (true disease).
— Factitious thyrotoxicosis: TSH↓, free T4↑, thyroglobulin LOW (suppressed by exogenous T4), RAIU low. Contrast with Graves (thyroglobulin↑, RAIU↑).
— Factitious anemia (self-phlebotomy): iron-deficiency picture with no GI/GU source; low ferritin, microcytic, normal stool guaiac × repeated, no menorrhagia.
— Factitious Cushing-like: low ACTH and low cortisol with cushingoid features → exogenous glucocorticoid.
— Factitious diarrhea: stool osmotic gap, laxative screen (bisacodyl, senna, phenolphthalein), stool magnesium.
— Factitious hematuria/hemoptysis: compare blood type of "bled" sample to patient's; microscopy for source cells.
— Factitious infection/sepsis: polymicrobial cultures with enteric flora from non-GI sites are a classic clue.
— Continuous telemetry to capture vs. refute "syncope" or "seizure"; video EEG is gold standard for distinguishing epileptic from psychogenic non-epileptic seizures (PNES).
— Critical in suspected surreptitious medication use (warfarin → coagulopathy with normal liver; check anti-Xa, factor levels, brodifacoum).
Board pearl: C-peptide is the single highest-yield discriminator for factitious hypoglycemia — suppressed C-peptide with elevated insulin = exogenous insulin until proven otherwise.
— Obtain records from all prior hospitals with patient consent; FD patients often present at multiple facilities under varied names.
— Patterns of negative extensive workups, multiple surgeries without pathology, and discharge against medical advice when confronted are highly suggestive.
— State prescription drug monitoring programs (PDMP) — required check in most states — reveal doctor-shopping in malingering for controlled substances.
— Gold standard: capture a typical event with simultaneous EEG.
— PNES features: side-to-side head shaking, pelvic thrusting, asynchronous limb movements, eyes closed during event, prolonged duration (>2 min), preserved awareness, postictal weeping rather than confusion, normal ictal EEG.
— Key distinction: PNES is most often a functional neurological disorder (conversion) — NOT consciously produced — and is distinct from feigned seizures in FD/malingering. Treatment differs (CBT for PNES; confrontation inappropriate).
— Occlusive cast or dressing that the patient cannot remove → lesion heals → confirms self-infliction.
— Skin biopsy may show foreign material (fibers, fecal matter).
— Sulfonylurea/meglitinide panel for hypoglycemia.
— Anticoagulant panel (warfarin, superwarfarin/brodifacoum, direct oral anticoagulant levels) for unexplained bleeding.
— Thyroglobulin for factitious thyrotoxicosis.
— Urine diuretic screen for unexplained hypokalemia/metabolic alkalosis.
CCS pearl: Order video EEG before committing to "intractable epilepsy" workups; this single test prevents years of unnecessary antiseizure polypharmacy.
— External incentive present and proximate → malingering → not a psychiatric treatment target per se; address the incentive structure and document.
— No external incentive; deception serves the sick role → factitious disorder → psychiatric referral, supportive non-confrontational approach.
— Symptoms not consciously produced, distressing to patient → functional neurological/somatic symptom disorder → treat with CBT, physical therapy, validation.
— To self: self-induced sepsis, hypoglycemia, anticoagulant ingestion, repeat surgeries → can be fatal; FD has mortality up to ~10% in chronic cases.
— To others (FDIA): child or dependent adult is the victim — immediate safety assessment required; mandatory reporting to Child Protective Services or Adult Protective Services.
— Suicide and self-harm risk: comorbid borderline, depression, substance use common in FD.
— Non-punitive, non-confrontational disclosure by the primary team in collaboration with psychiatry: acknowledge the patient's suffering, present findings, offer psychiatric care as the path forward — "double-bind" or "face-saving" approach.
— Avoid expressions of anger or accusation; these prompt elopement and re-presentation elsewhere.
— Establish one primary care provider as gatekeeper for future care to reduce hospital hopping.
— Limit unnecessary procedures and admissions — explicitly documented care plan.
— Do not provide the secondary gain (no opioids, no unwarranted disability paperwork, no inappropriate admission).
— Document objective findings; offer appropriate non-incentive care.
— Be aware that some malingerers have true comorbid disease (e.g., real chronic pain + opioid-seeking) — don't dismiss everything.
Step 3 management: The single most important early action in suspected FDIA is separating the victim from the suspected perpetrator while authorities investigate — child safety supersedes diagnostic certainty.
— Depression: SSRIs (sertraline, escitalopram) first-line; start low (e.g., sertraline 25–50 mg daily) and titrate over 4–6 weeks. Monitor adherence carefully — some FD patients hoard or misuse medications.
— Anxiety disorders: SSRI/SNRI preferred; avoid benzodiazepines given dependency risk and abuse potential, especially in malingering overlap.
— Personality disorders (borderline, narcissistic, histrionic features common): no specific drug cures; target symptom domains (mood lability → SSRI; impulsivity → consider topiramate or low-dose SGA in select cases). Psychotherapy is primary.
— Substance use disorder: common in malingering for opioid access — initiate buprenorphine or refer to MAT program; this addresses both addiction and reduces opioid-seeking behaviors.
— Opioids, benzodiazepines, stimulants, gabapentinoids — high abuse/diversion potential; document in chart that these are not appropriate in the absence of clear indication.
— Long-term antibiotics for unclear "infections" — drives resistance and masks recurrent self-induction.
— Anticoagulants if surreptitious ingestion suspected.
— SSRIs may help comorbid depression/anxiety.
— CBT and physical therapy are the evidence-based core; medication is adjunctive.
— For patients with opioid-seeking malingering, prescribe naloxone and link to addiction services — patient safety remains the priority regardless of motive.
— Use state PDMP before every controlled substance prescription (mandatory in most states).
— Single-prescriber, single-pharmacy controlled-substance agreements for high-risk patients.
— Random urine drug screens for monitoring.
Board pearl: Prescribing a benzodiazepine to a patient with suspected FD or malingering with opioid-seeking is a classic wrong-answer choice on Step 3 — choose SSRI, refer to therapy, or address substance use directly.
— Cognitive behavioral therapy (CBT): addresses maladaptive illness behaviors, cognitive distortions about being "sick," and reinforces healthy coping.
— Psychodynamic psychotherapy: explores attachment wounds, early-life medical experiences, trauma, and unmet emotional needs that drive the sick role.
— Supportive therapy: maintains therapeutic alliance; the goal is engagement and damage limitation, not necessarily "cure."
— Dialectical behavior therapy (DBT): when borderline personality features prominent.
— Family therapy: essential in FDIA after child safety secured; perpetrator typically resists treatment and prognosis is guarded.
— Establish one primary care physician as gatekeeper.
— Single point of contact for specialty care, with consultations channeled through PCP.
— Shared electronic medical record flagging — many systems allow a confidential alert for FD/factitious patterns to prevent redundant invasive workup.
— Care conferences with hospital case management, psychiatry, ethics, and primary services.
— Set explicit boundaries on admissions, procedures, and ED visits with documented care plans.
— Face-saving approach: present findings as "we now have answers — your stress and the difficulty of your life situation are producing real symptoms; psychiatric support is the next step."
— Avoid the words "lying," "faking," or "made-up."
— Have psychiatry present in the room at disclosure to immediately offer follow-up.
— Disclosure that the requested intervention is not indicated, without moralizing.
— Offer alternatives that address legitimate needs (social work for housing, addiction treatment, disability evaluation through proper channels).
— FD: poor to guarded; high rate of treatment refusal and continued doctor-shopping. Engagement in even brief psychiatric care reduces hospital utilization.
— Malingering: prognosis tied to whether the external incentive resolves.
— FDIA perpetrators: poor prognosis, high recidivism — child protective action is the primary intervention.
CCS pearl: Schedule psychiatry consult on the same admission as disclosure — delaying allows elopement and represents a missed handoff.
— Less commonly diagnosed but underrecognized; presentations often mimic dementia, recurrent UTIs, falls, or unexplained weight loss.
— Surreptitious medication use in elderly: misuse of own or spouse's prescriptions (warfarin, insulin, opioids) → unexplained coagulopathy or hypoglycemia.
— Differential challenge: distinguish from genuine somatic symptom disorder, depression with somatization, or early neurocognitive disorder affecting reliability of history.
— Older adults with FD and chronic illness behaviors accumulate prescriptions; Beers Criteria medications (benzodiazepines, anticholinergics, long-acting sulfonylureas) are particularly hazardous.
— Renal impairment increases risk of glyburide-induced hypoglycemia in factitious presentations; check sulfonylurea metabolites carefully.
— Hepatic impairment alters acetaminophen, opioid, benzodiazepine metabolism — surreptitious use causes amplified harm.
— A caregiver inducing or fabricating illness in a dependent older adult is a form of elder abuse; reportable to Adult Protective Services (APS) in all states.
— Red flags: caregiver insists on procedures the patient resists; symptoms resolve when patient is hospitalized away from caregiver; caregiver disputes diagnostic findings.
— Before diagnosing FD in an elderly patient, screen for dementia, delirium, and depression with MoCA/MMSE, CAM, PHQ-9.
— Confabulation in dementia is not deception — patients believe their narrative; no DSM FD diagnosis applies.
— Less common but seen in disability extension, nursing home placement avoidance, or legal proceedings (e.g., feigned cognitive impairment to avoid prosecution — "feigned dementia").
— TOMM and Rey 15-item test screen for feigned cognitive impairment.
— Reduce sertraline, citalopram (max 20 mg in age ≥60) in hepatic impairment; escitalopram preferred for fewer interactions.
Step 3 management: In any older adult with recurrent unexplained illness improving with hospitalization, screen actively for caregiver-induced elder abuse and involve APS — mandatory reporter status applies to clinicians in every state.
— Perpetrator is most commonly the biological mother; victim usually <6 years old.
— Mortality of pediatric victims 6–10%; morbidity from induced illness, unnecessary procedures, medication side effects is substantial.
— Common feigned/induced presentations: apnea, seizures, bleeding, sepsis, failure to thrive, vomiting/diarrhea, recurrent infections with unusual organisms.
— Diagnostic clues: symptoms only in caregiver's presence; sibling with unexplained death (sudden infant death history); caregiver with healthcare background; caregiver welcomes invasive testing; "rare" combinations of conditions in one child.
— Immediate child safety is paramount.
— Mandatory report to Child Protective Services — clinicians are mandatory reporters in all 50 states; reasonable suspicion (not proof) triggers reporting.
— Hospital-level response: covert video surveillance is used in some institutions with legal/ethics committee approval; separate child from caregiver and monitor for symptom resolution.
— Multidisciplinary: child abuse pediatrics, social work, hospital legal, law enforcement.
— Do not confront the caregiver alone or before child is safe.
— Rare but described — feigned preeclampsia, bleeding, fetal distress; risk of unnecessary cesarean, preterm delivery.
— Care plan: consistent OB team, restricted ED tour, psychiatric co-management.
— Older adolescents may produce symptoms themselves; differentiate from somatic symptom disorder and conversion disorder.
— School avoidance often a key external incentive (malingering overlap).
— Overrepresented among FD patients; access to medications, knowledge of presentations, and institutional credibility facilitate deception.
— Suspicion warranted when a nurse/tech/physician presents with unusual self-induced disease (insulin hypoglycemia, anticoagulant overdose, factitious sepsis).
— Reporting obligations: institutional policy may require notifying licensing board if patient safety is at risk (e.g., nurse diverting medications).
Board pearl: In FDIA, the child is the patient who needs protection, but the DSM-5-TR diagnosis applies to the perpetrator — this is a frequent test point.
— Multiple unnecessary surgeries → adhesions, short bowel, chronic pain, anesthetic complications, surgical mortality.
— Repeated central line placements → CLABSI, pneumothorax, thrombosis.
— Cumulative imaging radiation exposure.
— Polypharmacy adverse effects, antibiotic resistance, C. difficile colitis.
— Inappropriate immunosuppression for fabricated autoimmune disease.
— Sepsis and endocarditis from injection of contaminants; polymicrobial bacteremia is a hallmark.
— Hypoglycemic brain injury from surreptitious insulin/sulfonylurea use.
— Hemorrhage and coagulopathy from warfarin/brodifacoum ingestion — can be fatal.
— Wound infections, scarring, limb amputation from chronic dermatitis artefacta.
— Comorbid depression, suicide risk — mortality in chronic FD is meaningful (up to ~10% in long-term cohorts).
— Disrupted relationships, employment loss, financial ruin from healthcare costs.
— Social isolation as families recognize deception.
— High cost utilization — chronic FD patients accrue hundreds of thousands of dollars in unnecessary care.
— Erosion of trust between clinicians and future patients with similar but genuine presentations.
— Clinician burnout and moral injury when deception is discovered after extensive workup.
— Death (6–10%), developmental delay, chronic dependency on medical care, future psychiatric disorders, perpetuation of the cycle (some adult FD patients were FDIA victims as children).
— Opioid overdose if drug-seeking succeeds.
— Legal consequences when discovered (fraud, insurance fraud charges, perjury in litigation contexts).
— Loss of legitimate benefits or care because of damaged credibility.
— Patients with FD do develop real diseases; once labeled, genuine symptoms may be dismissed — the "crying wolf" trap.
— Maintain a stance of objective re-evaluation for new findings.
Key distinction: The most common direct cause of death in FD is iatrogenic — from procedures the patient sought — not from the feigned disease itself. This reframes the harm: clinicians become unwitting agents of injury.
— Obtain early once factitious disorder is seriously suspected, ideally before disclosure to patient.
— Roles: confirm DSM-5-TR criteria, assess comorbid disorders, evaluate suicide risk, co-lead non-confrontational disclosure, arrange outpatient follow-up.
— In FDIA, psychiatry assesses the perpetrator; child abuse pediatrics evaluates the victim.
— Indicated when considering covert surveillance, room search, restricting care, or withholding requested procedures.
— Helps balance patient autonomy against beneficence and resource stewardship.
— Involve before any documentation that names deception, before disclosure, before contacting outside institutions for records, and before discharging against patient demands.
— Coordinate single PCP, single ED, payer notification (within HIPAA limits), and care plans.
— Admit when objective findings warrant (e.g., true hypoglycemia, true sepsis from self-injection) — the underlying physiologic derangement is real even if cause is factitious.
— ICU criteria are the same as for any patient: hemodynamic instability, respiratory failure, severe metabolic derangement.
— Avoid admission when objective workup is negative and presentation pattern fits FD/malingering — admit instead to a brief observation with psychiatric evaluation.
— In malingering with no medical indication for admission: discharge with appropriate outpatient referrals; document objectively.
— AMA discharge after disclosure is common in FD — ensure safety plan, naloxone if relevant, and outpatient psychiatry follow-up scheduled.
— Mandatory CPS report with reasonable suspicion.
— Hospital-led separation of child from suspected caregiver, often with security/law enforcement support.
— Multidisciplinary child protection team meeting before discharge.
— For dependent adults with suspected caregiver-induced illness.
— Assess decision-making capacity; FD does not automatically remove capacity.
— If imminent danger to self (e.g., suicidal, severely medically unstable), use emergency psychiatric hold under state law.
CCS pearl: "Order psychiatry consult" and "order social work" are almost always correct early CCS actions; "order another CT scan" or "order endoscopy" in a patient with suspected FD and negative workup is the trap.
— Conscious production/feigning. No external incentive. Motive: sick role.
— Conscious feigning. Clear external incentive (money, drugs, avoiding duty/prosecution).
— Not a mental disorder — V/Z-code.
— Symptoms are real to the patient, not consciously produced.
— Excessive thoughts, feelings, or behaviors about somatic symptoms; persistent (>6 months).
— High health anxiety, frequent visits, but no deception.
— Treatment: regular scheduled visits with single PCP, validation, CBT.
— Preoccupation with having or acquiring a serious illness; somatic symptoms minimal or mild.
— Care-seeking type vs care-avoidant type.
— Treatment: CBT, SSRI, scheduled visits.
— Neurologic symptoms (weakness, seizures, sensory loss, movement disorder) incompatible with recognized neurologic disease.
— Not consciously produced; patient is genuinely distressed.
— Often follows psychological stressor.
— Examples: PNES, functional limb weakness, functional tremor.
— Treatment: explanation of diagnosis, PT/OT, CBT.
— Look for secondary gain language: "applying for disability" → malingering; "scheduled court date" → malingering; "after spouse's death, multiple ED visits with vague pain" → SSD or FD depending on deception cues.
— Hoover sign positive, eyes closed during 'seizure', symptoms incompatible with anatomy but patient distressed → functional disorder.
— Patient produces symptoms or alters lab values → FD.
— Patient eager for invasive procedures and works in healthcare → FD.
— A single patient may meet criteria for multiple disorders (e.g., somatic symptom disorder with intermittent factitious behavior).
— Functional disorders can co-occur with genuine neurologic disease.
Key distinction: The consciousness of symptom production is the dividing line — FD/malingering = conscious; SSD/IAD/FND = not conscious. The presence of external incentive then divides FD from malingering.
— Insulinoma: elevated insulin + elevated C-peptide + no sulfonylurea on screen + tumor on imaging.
— Adrenal insufficiency: cortisol low, ACTH high (primary) or low (secondary).
— Non-islet cell tumor hypoglycemia: IGF-2 mediated.
— Surreptitious insulin (FD/malingering): insulin↑, C-peptide↓.
— Surreptitious sulfonylurea: insulin↑, C-peptide↑, sulfonylurea screen positive.
— Endocarditis, occult abscess, tuberculosis, drug fever, autoimmune (adult-onset Still's, vasculitis), lymphoma, periodic fever syndromes.
— Factitious fever: thermometer manipulation; temperature-pulse dissociation, no diurnal pattern, no other inflammatory markers.
— True immunodeficiency (CVID, HIV, complement deficiency), diabetes, IV drug use, anatomic predisposition.
— Factitious infection: polymicrobial enteric flora at non-GI site, injection marks.
— Von Willebrand disease, hemophilia, liver disease, vitamin K deficiency, true anticoagulant overdose, DIC.
— Factitious: warfarin/brodifacoum ingestion; mixing studies, drug levels.
— Epilepsy, cardiac syncope, vasovagal, hypoglycemia, panic attack, PNES (functional), feigned seizures (FD/malingering).
— Vascular insufficiency, diabetes, pressure injury, pyoderma gangrenosum, cutaneous malignancy, factitious (dermatitis artefacta).
— IBD, infection, motility disorder, bulimia nervosa, cyclic vomiting syndrome, cannabinoid hyperemesis, laxative abuse (factitious or eating disorder driven).
— Dementia, delirium, dissociative amnesia, transient global amnesia, postictal state, feigned cognitive deficit (malingering, especially forensic).
— Genuine addiction is a disease, not malingering — even when drug-seeking behavior is present. The diagnosis and management differ: SUD requires treatment (buprenorphine, methadone, naltrexone), not dismissal.
Board pearl: The Step 3 trap is labeling a patient as malingering when they have genuine opioid use disorder — treat the addiction, do not moralize.
— Designated single PCP as care gatekeeper.
— Scheduled, time-based visits (e.g., every 4–6 weeks) rather than symptom-driven visits — reduces sick-role reinforcement.
— Outpatient psychiatry for ongoing therapy (CBT, psychodynamic, DBT depending on profile).
— Pharmacotherapy for comorbid depression/anxiety (SSRI) and substance use disorder (buprenorphine, naltrexone).
— Limit prescriptions of controlled substances; use PDMP at every visit.
— Explicit list of diagnostic studies not to repeat without specific new indications.
— Statement that admission and procedures should be discussed with PCP before initiation when patient presents to ED.
— Alert flag in EHR (institution-dependent, with privacy protections) so future clinicians see the pattern.
— Distribute to relevant emergency departments within the health system.
— Naloxone prescription if opioid use disorder.
— Restricted access to insulin/anticoagulants where feasible (family-supervised storage).
— Safety planning for suicidality.
— Address the legitimate underlying need when possible: appropriate disability evaluation, social work for housing, addiction treatment program.
— Avoid creating a fraudulent disability record — accurate documentation protects both patient and clinician legally.
— Custody decisions by court; reunification only with court-monitored treatment of perpetrator and demonstrated safety.
— Ongoing pediatric care with single-team continuity to detect recurrence.
— Sibling evaluation — co-victims often missed.
— Inter-institutional record sharing (with consent) reduces hospital hopping.
— National database initiatives (limited in US due to privacy law).
— PDMP (mandatory check in nearly all states) for controlled substances reduces malingering-driven opioid acquisition.
Step 3 management: A patient with confirmed FD should be discharged with a written, multidisciplinary care plan distributed across the health system — this is the single highest-value intervention to reduce iatrogenic harm and cost.
— PCP visits every 4–6 weeks initially, transitioning to every 2–3 months once stable.
— Psychiatry visits weekly to biweekly during acute engagement, then monthly maintenance.
— Psychotherapy weekly for first 3–6 months minimum (CBT or psychodynamic).
— Symptom diary (without reinforcing illness focus — balance with function-focused questions).
— Functional status: work, relationships, activities of daily living, sleep, appetite.
— Medication adherence and side effects.
— Substance use (PDMP check, urine drug screen if indicated).
— Mood/suicidality screening (PHQ-9, C-SSRS).
— New objective findings — re-evaluate fairly; do not dismiss because of prior FD history.
— Validate suffering without validating fabricated content.
— Reframe healthcare visits as wellness and function focused, not symptom focused.
— Build coping skills, distress tolerance, interpersonal effectiveness.
— Address underlying trauma where present.
— With patient consent, engage family in care plan understanding — they often inadvertently reinforce sick role.
— In FDIA, family therapy is critical for non-perpetrating relatives and victim.
— Return-to-work support reduces sick-role reinforcement.
— For genuine disability, formal evaluation through appropriate channels (not by treating clinician where conflict exists).
— Number of ED visits per year (target: decreasing).
— Number of hospital admissions per year.
— Number of new specialists consulted (target: stable, low).
— Functional status scales (e.g., WHODAS 2.0).
— Quality of life measures.
— New objective derangement (true illness must be considered).
— Suicidal ideation.
— Evidence of new self-induction (lab discrepancies, unexplained injuries).
— In FDIA cases involving reunification — any recurrent victim symptoms triggers re-separation.
— Many FD patients drop out of psychiatric care when confronted. Maintain an open door policy — re-engagement is the realistic goal, not abrupt cure.
— Document continuity offers.
CCS pearl: Track healthcare utilization metrics (ED visits, admissions) — a downtrend is the most clinically meaningful sign of effective FD management, more reliable than self-report.
— Document objective findings and behaviors, not pejorative conclusions ("inconsistent exam findings, polymicrobial cultures from non-GI site," not "patient is faking").
— FD diagnosis belongs in the chart and is protected by HIPAA, but patients can request records — write defensibly and respectfully.
— Coordinated inter-institutional sharing requires patient authorization except for specific safety exceptions.
— A patient with FD requesting elective surgery: the clinician must decline procedures that lack genuine indication, even if the patient consents enthusiastically. The principle of non-maleficence (primum non nocere) overrides patient preference for non-indicated invasive care.
— Document the decision and rationale.
— Ethically controversial; in many institutions requires ethics committee, legal, and law enforcement approval.
— Justified when child safety outweighs the privacy intrusion and other diagnostic methods have failed.
— Always with institutional protocol — never an individual clinician acting alone.
— Child Protective Services for suspected FDIA — required in all 50 states with reasonable suspicion, not proof. Failure to report is a misdemeanor in most jurisdictions.
— Adult Protective Services for dependent adult abuse.
— Suspected healthcare worker diversion or impairment may require notification of licensing boards or institutional employee health — varies by state and institution.
— FD does not automatically impair decision-making capacity. Standard four-element capacity (understanding, appreciation, reasoning, expressing a choice) applies.
— Involuntary psychiatric hold is appropriate when imminent self-harm risk exists (e.g., patient threatening to inject more contaminated material), under state-specific civil commitment statutes.
— When malingering is suspected in a disability or forensic context, the evaluating clinician should not also be the treating clinician — dual roles create conflict of interest.
— Use structured assessments (SIRS, TOMM, MMPI-2) and document objectively.
— Patients with FD often present to multiple EDs and hospitals. Without inter-institutional communication, the same workup is repeated, costing money and causing harm.
— Handoff strategy: with patient consent, share care plan with regional EDs and ensure EHR flagging.
— Patients labeled "difficult" or "drug-seeking" are at risk of diagnostic anchoring — genuine new illness may be missed. Each presentation deserves objective re-evaluation.
Board pearl: Reasonable suspicion of FDIA → report to CPS now; you do not need diagnostic certainty, and you are legally protected when reporting in good faith.
— Munchausen syndrome = severe chronic FD with hospital wandering; Munchausen by proxy = FDIA (DSM-5-TR term).
— Pseudologia fantastica = elaborate dramatic lies, hallmark of FD.
— Ganser syndrome = approximate answers (e.g., 2+2=5); historically linked to FD/malingering, now considered dissociative.
— Insulin↑, C-peptide↓ → exogenous insulin.
— Insulin↑, C-peptide↑, sulfonylurea screen + → factitious sulfonylurea.
— Thyrotoxicosis with suppressed thyroglobulin and low RAIU → exogenous T4.
— Polymicrobial bacteremia with enteric flora in a non-cirrhotic, non-immunocompromised patient → self-injection.
— Microcytic anemia with no GI/GU source and no menorrhagia → self-phlebotomy.
— Unexplained warfarin-like coagulopathy → brodifacoum (superwarfarin) screen.
— Hoover sign for functional/feigned leg weakness.
— Midline sensory split with vibration loss on sternum → non-physiologic.
— Lesions in dominant-hand reachable areas, sparing back → dermatitis artefacta.
— Temperature-pulse dissociation in factitious fever.
— Female, 20–40, healthcare worker or extensive medical exposure, history of childhood illness or trauma, comorbid personality disorder.
— Biological mother, healthcare background, appears devoted, encourages procedures.
— Working in healthcare → FD.
— Pending litigation/disability → malingering.
— Requesting controlled substances by name → malingering.
— Welcoming invasive procedures → FD.
— Non-confrontational disclosure; psychiatry consult; single PCP; limit procedures.
— SSRI for comorbid depression; avoid benzodiazepines and opioids.
— CBT first-line psychotherapy; video EEG for suspected PNES.
— FDIA → CPS in all 50 states; reasonable suspicion suffices.
— FD: guarded, ~10% mortality in chronic cases (iatrogenic).
— FDIA victims: 6–10% mortality.
— Malingering: depends on incentive resolution.
Key distinction: Conscious + external incentive = malingering; conscious + sick role only = FD; unconscious + distress = somatic symptom or functional disorder.
— A 32-year-old nurse presents with recurrent hypoglycemia. Labs show insulin elevated, C-peptide suppressed, sulfonylurea screen negative. → Factitious disorder via exogenous insulin. Next step: psychiatry consult, non-confrontational disclosure.
— A 45-year-old man with pending workers' compensation hearing reports 10/10 back pain. Exam: inconsistent weakness, positive Waddell signs, observed walking normally to vending machine. → Malingering. Next step: document objectively, decline opioid prescription, offer appropriate non-incentive care.
— A 3-year-old has recurrent apnea episodes only witnessed by mother, who is a pediatric ICU nurse. Symptoms resolve when hospitalized. Sibling died of "SIDS." → FDIA. Next step: report to CPS, separate child from mother, multidisciplinary team.
— A 28-year-old woman has "seizures" with side-to-side head shaking, eyes closed, pelvic thrusting, postictal weeping. Video EEG shows no epileptiform activity. Patient is distressed, not seeking gain. → PNES (functional neurological disorder), NOT FD/malingering. Next step: CBT, gentle explanation of diagnosis, do not confront.
— A 50-year-old woman with excessive worry about chronic abdominal pain, multiple negative workups over 2 years, frequent PCP visits, no deception. → Somatic symptom disorder. Next step: scheduled visits with single PCP, CBT, SSRI.
— Hospitalized patient with fever to 104°F but no tachycardia, all cultures negative, fever spikes only when alone. → Factitious fever (manipulated thermometer). Next step: witnessed rectal temperature, psychiatric evaluation.
— Known FD patient presents with new chest pain, troponin elevated, ECG with ST elevation. → Treat the STEMI — real disease occurs in FD patients. Don't anchor on prior diagnosis.
— Recurrent bacteremia with mixed enteric organisms, IV access marks on patient who is a phlebotomist. → Factitious sepsis via self-injection.
— "Confront the patient with accusation of lying" — wrong; use non-confrontational disclosure.
— "Prescribe alprazolam for anxiety" — wrong; SSRI preferred.
— "Order repeat colonoscopy" in patient with multiple normal prior studies — wrong; stop unnecessary workup.
— "Discharge without psychiatry referral" — wrong; always arrange follow-up.
Step 3 management: When the stem features a healthcare worker with unusual presentations welcoming invasive procedures, factitious disorder is almost always the answer.
Distinguish factitious disorder from malingering by motive — sick role versus external incentive — and manage with non-confrontational disclosure, psychiatry referral, care coordination through a single PCP, and limitation of unnecessary procedures, while protecting children and dependent adults through mandatory reporting in cases of imposed illness.
— Motive divides the diagnoses: FD = sick role (no external gain, often healthcare workers, welcomes procedures); malingering = tangible external incentive (disability, drugs, court, work avoidance); both involve conscious deception, distinguishing them from somatic symptom disorder and functional neurological disorder (not conscious).
— Highest-yield labs to memorize: insulin↑ with C-peptide↓ = exogenous insulin; suppressed thyroglobulin with low RAIU in thyrotoxicosis = exogenous T4; polymicrobial enteric bacteremia at non-GI site = self-injection; positive sulfonylurea screen = factitious hypoglycemia from oral hypoglycemics; Hoover sign and midline sensory split = non-physiologic findings.
— Management essentials: rule out genuine disease first; psychiatry consult before disclosure; non-confrontational face-saving approach; single PCP gatekeeper with scheduled time-based visits; SSRI for comorbid depression/anxiety; avoid benzodiazepines and opioids; CBT/psychodynamic therapy long-term; document objectively in EHR with care plan distributed across system to prevent hospital-hopping and iatrogenic harm.
— Safety and reporting imperatives: suspected FDIA requires immediate mandatory CPS report in all 50 states on reasonable suspicion — proof not required; dependent adult equivalents go to APS; covert surveillance requires institutional approval; in malingering, decline the incentive (no inappropriate opioids, no unwarranted disability paperwork) but treat genuine comorbidities (opioid use disorder is a disease, not malingering) — and always remain alert to new genuine illness in previously labeled patients to avoid the "crying wolf" diagnostic anchoring trap.
Board pearl: Motive defines the diagnosis; protection of victims and harm reduction define the management.