Differentiating Factitious Disorder and Malingering
It is critical to distinguish between these entities based on the patient’s underlying motivation. Both involve the intentional production of false or exaggerated symptoms, but the goal is different.
| Feature | Factitious Disorder | Malingering |
|---|---|---|
| Motivation | Assuming the “sick role” (internal reward). | External gain (e.g., disability money, avoiding work, obtaining drugs). |
| Control | Symptoms are under voluntary control. | Symptoms are under voluntary control. |
| Diagnostic Status | A formal psychiatric disorder. | Not a psychiatric disorder (a “Z-code” / clinical focus). |
High-Yield Clinical Notes:
- Factitious Disorder Imposed on Another (formerly Munchausen Syndrome by Proxy): When a caregiver falsifies symptoms in a person under their care. This is a form of child or elder abuse.
- Munchausen Syndrome: A severe, chronic form of factitious disorder characterized by wandering, multiple hospitalizations, and dramatic, often falsified medical histories.
- Clinical Suspicion: Should be raised if:
- Symptoms do not align with physical findings or investigations.
- Patient is uncooperative during diagnostic evaluations.
- Symptoms only present when the patient is being observed.
- History is inconsistent or dramatic.