Chronic fatigue syndrome (CFS) is an illness that you must not take for granted. If it persists for a long time, may lead to serious other health troubles specifically related to your immune system. If you are suffering from chronic fatigue, then you will experience extreme tiredness that doesn’t go away with rest. You will feel like lack of motivation and energy that can lead to long-term disability in personal, social, educational, or professional activities. In this article you will find the causes, symptoms and treatments of chronic fatigue syndrome.