© 2016 Elsevier Inc. All rights reserved. This article describes psychological disorders involving exaggerated, fabricated, simulated, and induced medical problems. Factitious disorder and Munchausen syndrome are characterized by feigning or inducing illness or injury in oneself for primarily psychological benefits. Factitious disorder imposed on another and Munchausen by proxy are characterized by feigning or inducing illness or injury in another person, most commonly a child or dependent adult, for primarily psychological benefits. Malingering, although not a psychiatric diagnosis, is characterized by feigned illness or injury for primarily material benefits.