at that time; however, since the 1980s efforts to find a cause have increased. The disease became more prevalent and was called "Yuppie Flu," or "Yuppie Plague" (Chronic Fatigue Syndrome; Edelson, 1998). In the mid 1980s, the Centers for Disease Control (CDC) formulated criteria for chronic fatigue syndrome. The condition is now referred to as chronic fatigue and immunodysfunctional syndrome (Chronic Fatigue Syndrome; Edelson).
Health care professionals treating CFS patients face the problem that the etiology of the illness is unknown. Thus, in the absence of causal attributions for the symptoms of CFS, it is difficult to devise an effective regimen of treatment. As a consequence, there is no known cure for CFS.
Characteristics of chronic fatigue have been found in long-term autoimmune diseases. Biochemical imbalances have been identified as potential causal factors in diseases such as depression and long-term autoimmune diseases (Gimenez et al., 1999). While a biochemical imbalance has not
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