Can sustained arousal explain the Chronic Fatigue Syndrome?
Wyller, Vegard B, Eriksen, Hege R, Malterud, Kirsti·Behavioral and brain functions : BBF·2009
This study proposes that ME/CFS may be caused by the body getting stuck in a constant state of high alert, similar to being continuously stressed. This sustained arousal could develop after infections or emotional stress, especially in people with certain genetic traits or personality types. The researchers suggest this constant activation creates harmful cycles affecting the immune system, hormones, muscles, and thinking—ultimately leading to the overwhelming fatigue that defines ME/CFS.