This is an observational study with three phases. In Phase 1, focus groups consisting of family members of persons with HD Gene mutation will be conducted and data collected to be analyzed through content analysis to identify salient themes and key issues. In Phase 2, a survey instrument will be developed and field-tested in order to describe the health care needs, management strategies, and needs for health and social services of relative/significant others of asymptomatic and symptomatic persons with the mutation in the gene for HD.