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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. PatJ

    Bad reaction high dose to vitamin D

    I'd like to get some feedback about the problems I've been having after taking high dose vitamin D. I was quite stable for someone with ME/CFS but vitamin D has ruined that stability. The past month has been the worst for my health in years. I've been having more trouble than usual with...
  2. G

    Does anyone else experience most of their fatigue in the afternoon?

    My fatigue and brain fog is mostly in the afternoon, it starts around 11:30am and gets better around 5pm. The worst part of the day is 2-5pm for me. I'm wondering if anyone else experiences the same? I searched around on the forum but couldn't find much about people having similar experiences...
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