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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. leokitten


    Betahistine has been mentioned in passing in various posts but I thought it would be useful to make a dedicated thread to discuss pharmacology and possible effect on ME symptoms. Betahistine is typically prescribed for vertigo and other vestibular disorders. But in general it’s a strong H3...
  2. Jwarrior77

    Excessive Vein Dilation?

    Does anyone else have veins that seem to excessively dilate for no reason? I have POTS / Dysautonomia so I know it's related to this. They get dilated when exposed to heat, eating different foods, and even emotional upset or stress. I believe it could be related to MCAS however not entirely...