What is Chronic Fatigue Syndrome?

by LiveScience Staff

Date: 15 August 2012 Time: 12:52 PM ET

Definition of Chronic Fatigue Syndrome: A disorder marked by severe tiredness that isn't helped with sleep and cannot be explained by other medical conditions. Chronic fatigue syndrome, or CFS, is most common in women aged 30 to 50. Below is a brief overview of the causes, symptoms and treatments, plus links to more information.

What Causes Chronic Fatigue Syndrome? Research efforts have yet to find a cause. Studies on people with CFS have lead to competing theories that infections, immune disorders, stress, hormone imbalances, trauma or toxins trigger the disorder. Chronic fatigue syndrome may have multiple causes.

Is Chronic Fatigue Syndrome Contagious? No.

Signs & Symptoms:

Fatigue that is new, lasts more than 6 months and isn't helped by sleep.
Fatigue that gets worse for 24 hours after mental or physical activity.
Sleep troubles.
Memory and concentration difficulties.
Joint pain without redness or swelling.
Tender lymph nodes in the neck and armpits.

Treatment & Remedies: There is no cure for CFS, most treatments focus on symptom relief. A gentle exercise program and healthy diet is recommended. Doctors may prescribe drugs for anxiety, depression or sleep problems. Counseling can help people manage the daily challenges of living with CFS.

More Facts:

The CDC estimates 1 to 4 million people in the U.S. may have CFS.
Less than 20 percent of people with CFS have been diagnosed, according to the CDC.
Some people recover from CFS in less than a year. Others never make a full recovery.

Sources and More Information:

This information is not meant to provide specific medical advice. It is for educational purposes only. We recommend you consult a qualified health care professional for diagnoses and treatment advice, and call 9-1-1 in emergencies.