The Cayetano Heredia – WC Gorgas Course in Tropical Dermatology is a one-week course constructed through the collaboration between the Gorgas Memorial Institute of the University of Alabama at Birmingham, the Alexander von Humboldt Tropical Medicine Institute of the Universidad Peruana Cayetano Heredia and the University of Pennsylvania. It was started as an effort to provide advanced subspecialty training in the field of tropical medicine. The course is held at the Alexander von Humboldt Tropical Medicine Institute in Lima, located next to the Tropical Diseases Unit of the Cayetano Heredia Hospital, the national tropical diseases referral center for Peru. Peru’s diverse geography provides the participants the unparalleled opportunity for exposure to the wide spectrum of tropical diseases that are found in this national referral center.