Low and moderate drinkers of alcohol reported lower severity of symptoms of fibromyalgia than teetotallers, finds a study. Too much alcohol reversed this effect. The chronic pain of fibromyalgia is thought to affect one in 20 people worldwide but there is no known cause or cure. It often goes hand in hand with fatigue and sleep problems, headaches, depression and irritable bowel and bladder problems. Treatment is based around pain management and lifestyle changes.