• 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 register, simply click the Register button at the top right.

Post-Exertional Malaise and Fatigue

Does minimal activity result in muscular weakness and cognitive exhaustion? Does it take days/weeks to recover? This is the place to discuss post-exertional malaise (PEM), post-exertional symptom exacerbation (PESE), and other types of crashes. This is also the place to discuss the bone-crushing abnormal exhaustion that can occur outside of crashes.