The purpose of this article is to describe and reflect ethical challenges in a grounded theory study on the dynamics of hope in HIV-positive adults and their significant others. It concentrates on the justification of a research problem, sensitive research and the relationship between the researcher and the participants in data collection. The basis of ethically sound nursing research on the dynamics of hope in these two vulnerable groups lies in the relationship between the researcher and the participant. However, it (...) is also obvious that the content, the process, the methods used and the ethics of the study cannot be divorced from this relationship. In conducting grounded theory research on the dynamics of hope in this research population, the researcher has to consider the surrounding world, that is, the reality in which these people live in hope or despair. (shrink)