For examples of scientific harm done to ME/CFS patients see this video by @brokenbattery
It lists many issues, including the CDC renaming the illness in 1988 and the PACE trial, a flawed research study that has not yet been retracted:
https://www.youtube.com/watch?v=RiwX9Y0NbiQ
"George Monbiot describes the treatment of Myalgic Encephalomyelitis as 'the greatest medical scandal of the 21st century' …'"
Transcript:
https://medium.com/@abrokenbattery/me-cfs-scandal-explainer-eb4c1bfb7464#0cda