“The crucial differentiation between ME and other forms of postviral fatigue syndrome lies in the striking variability of the symptoms not only in the course of a day but often within the hour. This variability of the intensity of the symptoms is not found in post viral fatigue states.” FatigueMyalgic EncephalomyelitisPost Viral Fatigue SyndromePostviral Fatigue SyndromePost Viral FatiguePost Viral Syndrome Author:Melvin Ramsay