A commentary by Amal Mattu, MD, was published in the Emergency Medicine Viewpoints column of Medscape on September 15 (www.medscape.com/viewarticle/885676). Titled “Painless Aortic Dissection in the Emergency Department,” it summarizes the article by Kit Ling Fan and Ling Pong Leung, from the University of Hong Kong, in the April issue of The American Journal of Emergency Medicine. Based on the conclusions of that source article, “Clinical Profile of Patients of Acute Aortic Dissection Presenting to the ED Without Chest Pain,” Dr. Mattu advises that, for most medical conditions, including AAD, “classic” presentations exist only in textbooks and on board exams.