• Welcome to Phoenix Rising!

    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 (FM), long COVID, postural orthostatic tachycardia syndrome (POTS), mast cell activation syndrome (MCAS), and allied diseases.

    To register, simply click the Register button at the top right.


  1. Pyrrhus

    Endothelial Dysfunction in ME

    I thought I'd start a thread to summarize discussions about the different types of endothelial dysfunction that might be found in ME. Please feel free to add to this thread as needed. What is "Endothelial Dysfunction"? Blood vessels are enclosed by a layer of cells called endothelial cells...