Re ME/CFS (WDDTY vol 14 no 12), the WHO categorises 'chronic fatigue' states as 'Mental Health Problems and Behavioural Disorders' under F48.0 whereas ME (and CFS) are classified as 'Neurological Disorders' under G93.3.
However, certain UK psychiatrists have taken it upon themselves to 'reclassify' ME as a mental disorder. This is not in accordance with WHO rules and regulations.
ME is only considered 'all in the mind' by psychiatrists. - Doris M. Jones, Ilford