Fatigue with all of the following features:
New or specific onset
Persistent and/or recurrent
Reduction in activity level
Unexplained by any other conditions
Post-exertional depression and/or fatigue (seen after 24 hours and with slow recovery time)
One or more of the following symptoms:
Muscle and/or joint pain at multiple places and without any inflammation
Sleep problems such as insomnia, hypersomnia, unrefreshing sleep, disturbed sleep-wake cycle
Painful…
