CFS (Chronic Fatigue Syndrome)
Overview CFS is also less commonly known as ME (myalgic encephalomyelitis) or SEID (systemic exertion intolerance disease). The condition is both chronic and complex and the World Health Organisation has classed it as a neurological disorder. Despite this it can also affect the brain and muscles as well as the immune, cardiac and digestive systems. The condition is characterised by extreme fatigue that does not improve with rest and cannot …