Chronic fatigue syndrome (CFS) is a chronic, debilitating disorder. It affects your brain and multiple parts of your body. It causes extreme fatigue and is not relieved by bed rest. Physical or mental fatigue often makes the condition worse. Symptoms last at least six months and are severe enough to interfere with daily activities.
There is no specific lab test or clinical sign for CFS. No one knows exactly how many people are affected by this illness. The Centers for Disease Control and Prevention estimates, that as many as 500,000 people in the US have a CFS-like condition.
No one knows what causes CFS. For more than a century, doctors have reported seeing illnesses similar to it. In the 1860s, Dr. George Beard named the syndrome neurasthenia. He thought it was a nervous disorder with weakness and fatigue.
Experiments in men supported his idea that the brain is somehow involved in CFS.
In the early 1980s, CFS was stereotyped as a new yuppie flu. People who sought help for their symptoms were primarily upper middle-class women in their thirties and forties. Since then, health experts have suggested other explanations for this baffling illness, including:
Doctors now report seeing the syndrome in people of all ages, races, and social and economic classes. It is also found in several countries around the world. Women are still more affected than men about 4:1.
Recovery time varies among individuals with CFS. You may recover to the point where you can resume work and other activities. You may continue to experience various or periodic CFS symptoms. CFS typically follows a cyclical course. It alternates between periods of illness and relative well-being.
You may also recover completely with time.
Please be aware that this information is provided to supplement the care
provided by your physician. It is neither intended nor implied to be a
substitute for professional medical advice. CALL YOUR HEALTHCARE PROVIDER
IMMEDIATELY IF YOU THINK YOU MAY HAVE A MEDICAL EMERGENCY. Always seek the
advice of your physician or other qualified health provider prior to
starting any new treatment or with any questions you may have regarding a