Chronic fatigue syndrome and long covid: moving beyond the controversy Many patients with "long" covid are experiencing extreme fatigue, a situation that has re-polarised approaches to treatment and rehabilitation. Melanie Newman reports Melanie Newman freelance journalist "I submitted the first positive trial of cognitive behavioural therapy [CBT] as a treatment for chronic fatigue in the '90s," recalls Michael Sharpe, a professor of psychological medicine who was then a lecturer at Oxford University. "Next thing, my head of department got an unsigned letter, sent to The BMJ, saying that the research study was made up."