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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. ChookityPop

    If I use my muscles a tiny bit too much I get PEM.

    Its so weird. Last year my legs suddenly "stopped" working. I got crazy lactic acid buildup and lots of pain. Walking in general sucks, but stairs and walking downhill is a lot worse. In november I removed snow from my car and "destroyed" my arms and got crazy PEM afterwards. I bought this car...