What is Fatigue?

There are many possible physical and psychological causes of fatigue. Some of the more common are:An allergy that leads to hay fever or asthma ; Anemia (including iron deficiency anemia); Depression or grief ; Persistent pain; Sleep disorders such as ongoing insomnia, obstructive sleep apnea, or narcolepsy ; Underactive or overactive thyroid gland; Use of alcohol or drugs such as cocaine or narcotics, especially with regular use; Addison's disease ; Anorexia or other eating disorders; Arthritis,...

Read more on www.nlm.nih.gov
Also known as exhaustion, lethargy, tiredness, weariness, Lassitude
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Fatigue is a common health complaint. It is, however, one of the hardest terms to define, and a symptom of many different conditions. Fatigue, also known as weariness, tiredness, exhaustion, or lethargy, is generally defined as a feeling of lack of energy. Fatigue is not the same as drowsiness, but the desire to sleep may accompany fatigue. Apathy is a feeling of indifference that may accompany fatigue or exist independently.


Fatigue is a feeling of weariness, tiredness, or lack of energy.

Read more on www.nlm.nih.gov

Chronic Fatigue Syndrome

Chronic fatigue syndrome (CFS) is a complicated disorder characterized by extreme fatigue that may worsen with physical or mental activity, but doesn't improve with rest. Although there are many theories about what causes this condition ranging from viral infections to psychological stress in most cases the cause is still unknown.

Read more on www.mayoclinic.com

Chronic Fatigue Syndrome

Chronic fatigue syndrome (CFS) causes long-term tiredness (fatigue) that affects everyday life. It does not go away with sleep or rest.

Read more on www.nhs.uk

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a complex condition characterized by extreme, long-lasting exhaustion. This disorder affects many different body systems, and is often disabling. The main symptom of chronic fatigue syndrome (CFS) is tiredness that does not improve with rest and prevents you from carrying out normal daily activities. The term chronic fatigue syndrome was adopted in 1988, when researchers considered fatigue to be the major symptom. Today, physicians and patient groups often refer to this disorder as chronic fatigue and immune-dysfunction syndrome (CFIDS) to stress that it involves many other symptoms. Symptoms vary among patients, and can even change in the same person over time. Another name for CFS is myalgic encephalomyelitis.

Read more on www.pdrhealth.com

Chronic Fatigue Syndrome

The Epstein-Barr virus (EBV) discovered in 1964, is believed to be the causative agent in infectious mononucleosis. In South African children, it is associated with Burkitt's lymphoma, and in Asian populations with nasopharyngeal carcinoma. Why the virus has these different and varied associations in different geographical areas is unknown. Also it is the cause of chronic fatigue syndrome, a condition that has become widespread in the United States. EBV is a member of the herpes family and is related to the viruses that cause genital herpes and shingles.

Read more on www.emedicinal.com

Fatigue and Weakness: Causes and Related Conditions

Jan 13, 2009 ... Weakness and fatigue are terms that are often used as if they mean the same thing, but in fact they describe two different sensations.

Read more on www.webmd.com

Fatigue (medical) - Wikipedia, the free encyclopedia

Fatigue (also called exhaustion, lethargy, languidness, languor, lassitude, and listlessness) is a state of awareness describing a range of afflictions, ...

Read more on en.wikipedia.org

CDC - Chronic Fatigue Syndrome (CFS)

Oct 15, 2010 ... Offers information on diagnosis, treatment, support groups, and research publications. A U.S. Centers for Disease Control and Prevention ...

Read more on www.cdc.gov

Fatigue definition - Sleep Disorders Including, Sleep Apnea ...

Mar 10, 2011 ... Fatigue: A condition characterized by a lessened capacity for work and reduced efficiency of accomplishment, usually accompanied by a ...

Read more on www.medterms.com


Fatigue is different from drowsiness. In general, drowsiness is feeling the need to sleep, while fatigue is a lack of energy and motivation. Drowsiness and apathy (a feeling of indifference or not caring about what happens) can be symptoms that go along with fatigue.

Read more on www.nlm.nih.gov
Home Care
Here are some tips for reducing fatigue:Get adequate, regular, and consistent amounts of sleep each night.; Eat a healthy, well-balanced diet and drink plenty of water throughout the day.; Exercise regularly.; Learn better ways to relax. Try yoga or meditation.; Maintain a reasonable work and personal schedule.; Change your stressful circumstances, if possible. For example, switch jobs, take a vacation, and deal directly with problems in a relationship.; Take a multivitamin. Talk to your doctor...

Read more on www.nlm.nih.gov
Medical advice
Call your doctor right away if:You are confused or dizzy; You have blurred vision; You have little to no urine, or recent swelling and weight gain; You have ongoing, unexplained weakness or fatigue, especially if accompanied by fever or unintentional weight loss; You have constipation, dry skin, weight gain, or intolerance to cold; You wake up and fall back to sleep multiple times through the night; You have headaches; You are taking any medications, prescription or non-prescription, or using...

Read more on www.nlm.nih.gov
What to Expect at Your Office Visit
Fatigue is different from drowsiness. In general, drowsiness is feeling the need to sleep, while fatigue is a lack of energy and motivation. Drowsiness and apathy (a feeling of indifference or not caring about what happens) can be symptoms that go along with fatigue.

Read more on www.nlm.nih.gov