Mdedge Psychcast

John Koo, MD, and Scott A. Norton, MD, MPH, join host Lorenzo Norris, MD, for this special edition of the Psychcast. This is a crossover episode with our sister podcast, Dermatology Weekly. Dr. Koo is a psychiatrist and a dermatologist at the University of California, San Francisco. He has no disclosures. Dr. Norton is a dermatologist with the Uniformed Services University of the Health Sciences in Bethesda, Md., and with George Washington University, Washington. He has no disclosures. They are featured in an article on this topic online at MDedge.com/Psychiatry. Dr. Norris is associate dean of student affairs and administration at George Washington University. He has no disclosures. Take-home points Delusional infestation or delusions of infestation, also known as delusional parasitosis, is a fixed false belief that one has an infestation of animate or inanimate pathogens, despite strong evidence against infestation. Common precipitants of delusional infestation include previous exposure to external or int