Type: Multiple causes
The chronic fatigue syndrome was cataloged as a disease in the eighties of the last century. It is an organic, multisystemic and chronic disease that weakens the immune system, it also affects the nervous, cardiovascular and endocrine systems.
It is characterized by chronic fatigue, unrefreshing sleep, intolerance to stimuli such as noise or lights, stress, irritability, muscle and joint pain, chronic feeling of flu and greater propensity to get infections. The feeling of fatigue can leave the person bedridden.
It has an important relationship with the XMRV virus.
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