Table 2.

Details of the important symptoms that characterise CFS/ME and their respective scores. See text for further details

Factor	Score
Delayed prolonged post-exertion malaise after increases in physical, mental & emotional activity	3
Non-restorative sleep with frequent difficulty initiating and/or maintaining sleep	2
Impaired concentration that is reduced further by external stimuli	1
Reduced short term memory with word finding difficulty	1
New onset headaches (>2/mth and different in character from previous headaches)	1
Sore throat with cervical tenderness/recurrent flu-like episodes	1
Arthralgia affecting several joints with stiffness >1 hr but no swelling	1
Myalgia affecting multiple groups and exacerbated by mild exertion	1
Postural instability feeling unstable on standing, prolonged standing or sitting	1
Hypersensitivity to sounds and lights (smells and to a lesser degree taste also)	1