As you would probably know, fibromyalgia is a chronic syndrome; chronic meaning that the syndrome is long-lasting, normally a lifelong illness. Fibromyalgia does not do damage to joints or cause inflammation, although it is considered an arthritis related condition. In fact, Fibromyalgia is a rheumatic condition for it causes pain in soft tissue and joints.
To be clear, although there are many theories, a consensus about any one specific cause of Fibromyalgia does not exist. Researchers and physicians believe that a combination of factors working in concert play a role in the existence of Fibromyalgia.