CFS is characterized by incapacitating fatigue (experienced as profound exhaustion and extremely poor stamina) and problems with concentration and short-term memory. It is also accompanied by flu-like symptoms such as pain in the joints and muscles, unrefreshing sleep, tender lymph nodes, sore throat and headache. A distinctive characteristic of the illness is post-exertional malaise, a worsening of symptoms following physical or mental exertion occurring within 12-48 hours of the exertion and requiring an extended recovery period. 

The symptoms of CFS are highly variable and fluctuate in severity, complicating treatment and the ill person’s ability to cope with the illness. Most symptoms are invisible, which makes it difficult for others to understand the vast array of debilitating symptoms with which people with the illness must contend.

Other Common Symptoms
Additional symptoms are reported by people with CFS (PWCs) such as word-finding difficulties, inability to comprehend/retain what is read, inability to calculate numbers and impairment of speech and/or reasoning. PWCs may also have visual disturbances (blurring, sensitivity to light, eye pain, need for frequent prescription changes); psychological problems (depression, irritability, anxiety, panic attacks, personality changes, mood swings); chills and night sweats; shortness of breath; dizziness and balance problems; sensitivity to heat and/or cold; alcohol intolerance; irregular heartbeat; irritable bowel (abdominal pain, diarrhea, constipation, intestinal gas); low-grade fever or low body temperature; numbness, tingling and/or burning sensations in the face or extremities; dryness of the mouth and eyes (sicca syndrome); gynecological problems including PMS and endometriosis; chest pains; rashes; ringing in the ears (tinnitus); allergies and sensitivities to noise/sound, odors, chemicals and medications; weight changes without changes in diet; light-headedness; mental fogginess; fainting; muscle twitching; and seizures.

Source:  CFIDS Association of America (CFIDS)


(Please see your doctor if you think you might have Chronic Fatigue Syndrome, also known as Chronic Fatigue and Immune Deficiency Syndrome and Myalgic Encephalitis. This information is not intended to replace a diagnosis by your physician.)


  1. First of call your blog's 1st image, "Chronic Fatigue Symptoms", i mostly like. Then description on the given topic is very deeper and easy to understand for the people.

    Your website CFIDS is also one of the good website for CFS/ME as per my point of view.

    Thanks for posting this kind of post!!!

  2. I had to change the title in order to fit another tab at the top of my blog page.

    I agree that the CFIDS site is really good and has a lot of great information. I hope this link will help people looking for information.

    I'd love to just switch the whole thing over to myalgic encephalomyelitis, which is what the recent study says that it is, but people still recognize it under chronic fatigue syndrome. Unfortunately, the name is a huge problem because it doesn't begin to describe the disease. It just sounds like we're tired all the time, which is totally wrong.



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