What are the main signs and symptoms of chronic fatigue syndrome?

    Researchedby:
    Nick Milazzo, Brady Holmer

    Fact-checked

    by:

    Morgan Pfiffner
    Last Updated: October 25, 2023

    The symptoms of CFS can be unpredictable, and may improve or get worse over time. Common symptoms include:[1]

    • Severe fatigue that doesn’t improve with rest
    • Sleep disturbances
    • Difficulty thinking/concentrating
    • Pain
    • Dizziness (especially after standing up)
    • Gastrointestinal discomfort
    • Postexertional malaise (i.e., The worsening of symptoms following relatively small amounts of physical or mental effort.)

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