Chronic fatigue syndrome: issues in the diagnosis and estimation of incidence.
Armon, C, Kurland, L T·Reviews of infectious diseases·1991
This article examines how ME/CFS is diagnosed and points out problems with the current definition used by doctors. The authors identified several issues: the definition doesn't clearly address what happens when patients do too much activity, it doesn't specify how much rest is needed, and it may miss cases in poorer communities. They suggest a new flowchart that could help identify different types of ME/CFS and potentially help some patients avoid developing the condition.