All the 'research' in this article is old. Pathetic article using 'science' to support it. Not that I personally have a problem with the concept, I think - speaking as someone who always strove to do his best (which may not mean I was a perfectionist of course), can be hard to maintain: which is why you avoid it becoming obsessive and keep it real (man ) Can OCD or something that might lead to this implied 'perfectionism' as an obsessive pursuit, lead to illness? Well, I would imagine if you are dogged enough at trying to achieve and overachieve even at times when your body is telling you to stop, or when you are simply not cut out (intellectually or physically) for the job or sport or hobby etc. then yeah: I can imagine it would run you down and leave you open for something - or run you down and make you feel unwell. But to suggest in this article that the research quoted supports the notion appears nuts to me, and to further suggest perfectionism is a way to gain a diagnosis of CFS, is not only outdated as a concept: but has never to my knowledge been more than a psychologists wet-dream This Doctor (the author) if you click the link, is apparently part of BMJ research group or something. How very sad It's not really the way to use 'science' is it?