Fibromyalgia (fi.bro.my.al.gi.a) is a condition that causes pain across the body (also called generalized or widespread pain), sleep disturbances, tiredness, and often emotional and mental distress. People with fibromyalgia may be more sensitive to pain compared to people without fibromyalgia. This is called the treatment of abnormally perceived pain. Fibromyalgia affects about 4 million adults in the USA or about 2% of the adult population. The cause of fibromyalgia is still unknown, but fortunately, it can be handled and managed effectively.