A new study from Norway suggests that a lack of sleep over the years can double or even triple the risk of fibromyalgia for certain age groups. Although this is the largest study to date, scientists are wary of drawing any conclusions about what actually causes fibromyalgia. However, it has long been understand that poor sleeping patterns can lead to a worsening of symptoms for those suffering from the disease, and a vicious cycle can begin where the pain causes a lack of sleep which in turn worsens the pain. Lack of sleep is also a risk factor for many other chronic diseases, so this study reinforces the suggestion that sleep and chronic conditions are intrinsically linked.
http://www.huffingtonpost.com/2011/11/15/sleep-problems-fibromyalgia-women_n_1095338.html