Table 1.

 Patient information including summary of aspects used for the CFS case definition and scores for physical fatigue, mental fatigue, anxiety, and depression

Clinical parameter	N
Sex	9 male/16 female
Mean age	40.6 years
Mean duration of disease	2.3 years
CFS began with flu-like illness	15
Impaired memory	22
Impaired concentration	21
Sore throat	17
Myalgia	20
Arthralgia	13
Headache	19
Unrefreshing sleep	21
Post exertional malaise	23
Tender lymphadenopathy	18
Autonomic features	20
Atopic features	13
Physical fatigue (Chalder) score (most severe, 21)	Mean, 17.2; range, 12–21
Mental fatigue (Chalder) score (most severe, 12)	Mean, 9.28; range, 5–12
Anxiety score (HAD) (most severe, 21)	Mean, 9.88; range, 3–18
Depression score (HAD) (most severe, 21)	Mean, 7.96; range, 1–20

CFS, chronic fatigue syndrome; HAD, Hospital Anxiety and Depression.