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    Created in 2008, Phoenix Rising is the largest and oldest forum dedicated to furthering the understanding of, and finding treatments for, complex chronic illnesses such as chronic fatigue syndrome (ME/CFS), fibromyalgia, long COVID, postural orthostatic tachycardia syndrome (POTS), mast cell activation syndrome (MCAS), and allied diseases.

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me/cfs criteria

  1. Hip

    PEM may be triggered by cognitive exertion alone. Thus if a patient does not have physical exertion PEM, they may still get an ME/CFS diagnosis

    Modern ME/CFS diagnostic criteria require post-exertional malaise (PEM) as a mandatory symptom for an ME/CFS diagnosis. PEM of course is the well-known temporary period of worsened ME/CFS symptoms that usually hit in the next day or two after engaging in exertion (but may also appear on the same...
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