(CNN) Chronic fatigue syndrome, a condition that causes extreme tiredness, could be triggered by an overactive immune system, a study has found. Why a person's immune system could be primed to hyper react is unclear, but genetics could be a possible reason, he added. Many people who have chronic fatigue find pacing helpful in managing their condition, according to the UK's National Health Service. More studies are needed to confirm its relevance to chronic fatigue patients, the paper says. 'Blackness descending'Skye Wheeler, a 19-year old from Cambourne, Cornwall, is housebound due to her chronic fatigue syndrome.

Source: CNN December 17, 2018 15:24 UTC