After years of treating the syndrome as a psychological disorder, leading health organizations now recognize that it is a serious, long-term illness possibly caused by a disruption in how the immune system responds to infection or stress. It shares many characteristics with autoimmune diseases like rheumatoid arthritis but without apparent signs of tissue damage.
Accordingly, doctors now typically refer to it as myalgic encephalomyelitis, meaning brain and spinal cord inflammation with muscle pain, and in scientific papers it is often written as ME/CFS. At the same time, a major shift is underway as far as how the medical profession is being advised to approach treatment. More