Patients who exaggerate, feign, or induce physical illness are a great challenge to their physicians. Trained to trust their patients’ self-reports, even competent and conscientious physicians can fall victim to these deceptions. In doing so, the treating physician may unwittingly provide support for specious claims of illness or injury by conferring official diagnoses, or by delivering treatments that transform the patient from a pretender into a person with a genuine, although iatrogenic, medical problem (eg, via adrenalectomy, pancreatectomy, serial amputation).1-3