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Patient Examination Process for CFS

Step 5

Woman holding hand on head

A patient will be classified as having CFS if he or she meets the following three criteria:

  1. The individual has severe chronic fatigue for 6 or more consecutive months that is not due to ongoing exertion or other medical conditions associated with fatigue (these other conditions need to be ruled out by a doctor after diagnostic tests have been conducted)
  2. The fatigue significantly interferes with daily activities and work
  3. The individual concurrently has 4 or more of the following 8 symptoms:
    • post-exertion malaise lasting more than 24 hours
    • unrefreshing sleep
    • significant impairment of short-term memory or concentration
    • muscle pain
    • multi-joint pain without swelling or redness
    • headaches of a new type, pattern, or severity
    • tender cervical or axillary lymph nodes
    • a sore throat that is frequent or recurring
 

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