Is there a connection between chronic fatigue syndrome and lupus fatigue?
It is generally thought that chronic fatigue syndrome (CFS) and lupus fatigue are two distinct entities. In 1994, an international panel of CFS research experts convened to draft a definition of CFS that would be useful both to researchers studying the illness and to clinicians diagnosing it. Chronic fatigue syndrome is defined as (1) having severe chronic fatigue of six months or longer with other known medical conditions excluded by clinical diagnosis; and (2) concurrently having four or more of the following symptoms: substantial impairment in short-term memory or concentration; sore throat; tender lymph nodes; muscle pain; multi-joint pain without swelling or redness; headaches of a new type, pattern or severity; unrefreshing sleep; and pain in muscle after exercising that last more than 24 hours. Lupus fatigue does not have a formal definition. Note that CFS appears in the absence of other medical conditions. Therefore, fatigue can be seen in lupus, but by definition is not relate
