• 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 become a member, simply click the Register button at the top right.

Search results

  1. A

    instant flu-like symptoms instead of PEM

    When I was more severe I had real-time worsening flu-like symptoms + headache, like you describe, mainly from mental exertion but physical too (i.e. 1 minute of reading I would get a sore throat + headache, and this would progressively worsen as I kept reading until it became unbearable). I also...