Oh, I'd like to say that none of that makes hypothyroidism the sole cause of CFS. There appears to be raised heart rate in CFS, which seems strange if it's primarily a thyroid underregulation problem.

But 'diagnose hypothyroidism by symptoms, ignore TSH, treat with any sodding thyroid hormone you like', seems to be straightforwardly the right thing to do, and uncontroversial amongst people who've tried it. All the debate is about what the best combination of T4/T3 is. But they all agree that they all work fairly well.

And at least some 'hypothyroid symptoms, normal TSH' people are going to end up diagnosed CFS, FMS, IBS, MDD, etc, etc, etc....