![](/sites/default/files/styles/max_325x325/public/Resouces/images/PE%20Chronic%20Fatigue%20Syndrome_5.jpg?itok=TLkDmbFx)
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 lymph nodes without pathological enlargement
Recurring headaches
Flu-like symptoms, constant sore throat
Dizziness and/or nausea
Cognitive dysfunction, such as difficulty thinking or focusing, short-term memory loss, inability to find words/ organise thoughts or process information
Physical or mental exertion
Palpitations in the absence of any heart problems