Fibromyalgia is a disorder characterized by chronic widespread pain and a heightened pain in response to tactile pressure.

Symptoms other than pain may occur, leading to the use of the term fibromyalgia syndrome (FMS).

The cause of fibromyalgia is unknown. However, the disorder is commonly associated with psychiatric conditions. The disorder is frequently misdiagnosed as far as symptoms overlap with those of many other conditions.

Statistically, women are more likely to develop fibromyalgia than men.

There is no single test that can fully diagnose fibromyalgia. and there is no agreement regarding the diagnostic criteria.

 In most cases, sufferers from fibromyalgia may have normal laboratory test with symptoms resembling those of other rheumatic conditions such as:

- arthritis, or

- osteoporosis.