Fatigue that is persistent, relapsing or debilitating; does not improve with bed rest; and reduces or impairs average daily activity level by more than 50 percent for a period of at least 6 months. Patient has no previous history of fatigue.

2. The patient has 4 or more of the following symptoms, which must have persisted or recurred during 6 or more consecutive months and predated the fatigue:

Short-term memory or concentration problems

Sore throat

Multi-joint pain without joint swelling or redness

Muscle pain

Headaches of a new type, pattern or severity

Non-refreshing sleep

Post-exertional malaise lasting more than 24 hours

In addition, a number of minor symptoms may also appear:

Poor sleep

Achiness

Brain fog

Increased thirst

Bowel disorders

Recurrent infections

Exhausting after minimal exertion

The type of chronic fatigue symptoms that patients feel are very different from what one feels after a stressful day at work. It is a severe, weakening fatigue that is not relieved by any kind of rest or sleep. And most physical and mental activities could make the condition even worse.

Aside from tiredness, the chronic fatigue symptoms list includes cognitive dysfunction and postexertional malaise. Cognitive dysfunction is characterized by memory loss and concentration problems. Postexertional malaise, on the other hand, is extreme exhaustion after even a simple mental or physical exercise.

People suffering from chronic fatigue symptoms will also experience a round of less than refreshing sleep. They may be able to sleep the normal hours all right, but when they wake up, they won't feel revitalized at all. Sleeping then is reduced to a routine that doesn't have any physical benefits to a person at all.

Joint pains and persistent muscle pains are also going to surface. Joint pains usually occur without swelling or redness. But just the same, its presence can be alarming that an appointment with a doctor maybe necessary.

And along with all of these, multiple episodes of headaches will also be experienced. The lymph nodes and the cervix area may also become tender. Sore throat would arise from time to time as well.

There are also some chronic fatigue symptoms that are showing on several individuals alone. The symptoms may not be apparent to other patients, but they appear quite too commonly that researchers of the disease established a link between them. These chronic fatigue symptoms include irritable bowel movement, brain fog, chills, night sweats, chest pain, chronic cough, jaw pain, and allergies.