Patients at this time can't reliably determine the correct definition(s) of this disease(s). More funded biomedical research is the only way to untangle a mess that took decades to create.
In short, we need more biomedical research funding, better clinical care, and government recognition that this is a serious biomedical illness. No matter what you call it – ME, CFS, ME/CFS, CFS/ME or SEID.
I certainly don't agree with everything in the IOM/NAM report. But it drew a clear line in the sand that we are talking about a serious biomedical illness, not a psychological issue, and that substantially more medical research funding is needed.
The report also provides a clear path to diagnosis. To think that most US doctors today, with 15 minutes per patient, should instead diagnose using ICC or CCC, is not realistic. SEID may not be perfect, but it's a start towards diagnosing the 90% undiagnosed. Without diagnosis, appropriate clinical care is simply not possible.