"Two forms of treatment are CBT and GET. CBT
is a psychological treatment. Its application in what
is certainly an organic disorder is basically irrational.
Its putative mode of action is based on the
proposition that patients with ME/CFS feel unwell
because they have an 'abnormal illness belief', and
that this can be changed with CBT.
It has never been proven to be helpful in the
majority of patients with ME/CFS. GET comprises a
regime of graded exercise, increasing incrementally
over time. It has been almost universally condemned
by most patient groups. A number of patient surveys
have shown it to be, at best, unhelpful, and at
worst, very damaging.
Its application is counter-intuitive, particularly when
one of the most debilitating and well recognised
symptoms of ME/CFS is post-exertional malaise
which can put some patients in bed for days after
relatively trivial exertion"
(Dr William Weir, Consultant Physician, November
2007)
http://www.meactionuk.org.uk/JR_Statements_-_extracts.htm