Chronic Fatigue Syndrome (CFS) Causes
A risk factor is something that increases your likelihood of getting a disease or condition.
It is possible to develop chronic fatigue syndrome with or without the risk factors listed below. However, the more risk factors you have, the greater your likelihood of developing CFS. If you have a number of risk factors, ask your doctor what you can do to reduce your risk.
Risk factors for developing CFS may include:
CFS is diagnosed one and half times more often in women than in men. This may be due to biological, psychological, and/or social influences. For example:
- CFS may have a gender difference.
- Women may be more likely than men to talk with their doctors about CFS-like symptoms.
However, an increasingly diverse patient group seems to be emerging as more doctors recognize chronic fatigue syndrome as a real medical disorder.
CFS is most common in people between the ages of 20 and 50. It can develop in people of all age groups, including teenagers and young children.
Some research suggests that people who are highly active and achievement-oriented may be more at risk for developing CFS. However, perhaps this personality type increases the risk only after exposure to new mental stress or viral infections.
Centers for Disease Control and Prevention website. Available at:
Chronic Fatigue and Immune Dysfunction Syndrome Association of America website. Available at:
Devanur LD, Kerr JR. Chronic fatigue syndrome.
J Clin Virol.2006;37:139-150.
Prins JB, van der Meer JW, Bleijenberg G. Chronic fatigue syndrome.