This talk will review common parasitic diseases in the tropics. The classification, presentation and basic treatment of these syndromes will be discussed in a case-based format. Visual recognition of findings will be part of this interactive session, using an audience response system. We will focus mostly on classic skin, abdominal, and pulmonary syndromes. We will also discuss some beneficial effects of parasites on childhood immune development. Less emphasis will be placed on parasites covered in other sessions, such as malaria. Let me know if you have a case to discuss or a specific question before the session.