Clinicians may increasingly find themselves practicing, by choice or necessity, in resource-poor or extreme environments. This often requires altering typical patterns of practice with a different set of medical and ethical considerations than are usually faced by clinicians practicing in hospitals in the United States and Europe. Practitioners may be required to alter their usual scope of practice or their standard ways of medically treating patients. Limited resources will also often place clinicians in the position of having to make decisions (...) about fairly allocating healthcare, which will alter the physician–patient relationship. This does not absolve physicians and other healthcare practitioners of providing the best quality of care that can be given under the circumstances. In addition, the lack of a well-developed healthcare infrastructure and limited resources will require working with established providers to determine the needs of the community, and what types of healthcare are feasible given these limitations. The essays in this issue of HEC Forum encourage readers to reflect on the unique ethical challenges faced in the extreme or austere environment. (shrink)