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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. NrsNoMore;(

    I don't have OI -- Wrong!

    Sasha, what is the 30 minute test for OI? I am a nurse and had my doctor's office do a standard tilt test like we do in the ER to diagnose dehydration/ low blood pressure/ Orthostatic hypotension. My BP dropped 20 points from sitting to standing. That was a positive tilt test in ER standards...