• 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, 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.

Disease Onset and Progression

A forum for any topic related to epidemiology and prognosis, including: predisposing factors such as genetics or childhood infections, type of disease onset such as sudden or gradual, any initial infectious trigger whether part of an outbreak or isolated, natural course of the disease including remissions and relapses, prevalence of the disease in the population or by gender, family clusters, the possibility of transmission, autopsies, etc.