What is a disease? Perspectives of the public, health professionals and legislators http://bmjopen.bmj.com/content/2/6/e001632.full.pdf html Participants were asked about their views on chronic fatigue syndrome. Opinions are divided on CFS. Note how similar the views are on work exhaustion. Nurses clearly consider work exhaustion to be more of a disease than CFS, although CFS has fewer people overall that strongly disagree with the idea that it's a disease. Members of parliament are more likely to view CFS as disease, about 2/3 expressing agreement with the idea. This study was conducted in Finland so the results may not be generalizable to other countries.