This surprised/shocked me. I was just listening to BBC Radio 5, and they have a regular guest who is a sleep doctor on. At 00.40 a lady called in about her daughter who she said has CFS, and sleep issues... When the presenter asked the sleep expert about CFS, he said something like: you told us the correct name for CFS.... Expert: yes, SEID (he pronounced it SEED). Systemic Exercise Intolerance Disease... Then corrected to Exertion (!!... A lot of us predicted people are going to confuse exertion with exercise).