Separating Patients with SEID from Those with CFS in the French ME/CFS Association, with Some Thoughts on Nomenclature.
Campagne, Julien, Fornasieri, Isabelle, Andreani, Barbara et al.·Diagnostics (Basel, Switzerland)·2022
Researchers surveyed French ME/CFS patients to see how many met the newer diagnostic criteria called SEID (Systemic Exertion Intolerance Disease), proposed in 2015. They found that about 84% of patients in the survey met SEID criteria, and certain symptoms like unrefreshing sleep, brain fog, and problems with blood pressure changes were especially useful for identifying SEID patients. However, most patients didn't strongly prefer the new SEID name over ME/CFS, suggesting the medical community should work with patients to find better terminology.