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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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  1. Pyrrhus

    Post-Exertional Symptom Exacerbation (PESE)

    Post-Exertional Symptom Exacerbation (PESE) Post-Exertional Symptom Exacerbation (PESE) is a term that has been proposed to replace the term Post-Exertional Malaise (PEM). Some say that the use of the word "malaise" in PEM minimizes the seriousness of PEM. Some say that "symptom exacerbation"...
  2. Pyrrhus

    Post-Concussion Syndrome may come with PEM

    A common question that people ask is: "Are there any other conditions that also come with PEM?" Post-Concussion Syndrome (PCS) follows a Traumatic Brain Injury (TBI). It is often suggested that Post-Concussion Syndrome (PCS) may possibly come with PEM/PENE. However, I am not aware of any...