In discussions of medical decision making as it applies to people with disabilities, a major obstacle stands in the way: the perceptions and values of disabled people and of many nondisabled people, regarding virtually the whole range of current health and medical-ethical issues, seem frequently to conflict with one another. This divergence in part grows out of the sense, common among people with disabilities, that their interactions with “the helping professions,” medical and social service professionals, are adversarial. But those differences (...) of opinion also stem more basically from a clash of fundamental values.This paper addresses, in historical perspective, the ways in which the status of persons with disabilities as a stigmatized minority group affects medical decision making. It also examines the efforts of disability rights activists to prevent discrimination against persons with disabilities in current medical culture. Finally, it raises questions about how the rights of people with disabilities will fare as new care standards are developed and implemented. (shrink)