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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. M

    What is the poor man's endothelial function test?

    We all know the poor man's tilt table test, but is there an equivalent for endothelial function? The most usual way to measure endothelial function is via the Flow Mediated Dilation (FMD) test. It is not a high-tech test, but it tends not to be easily available either (not sure why). I am...