Diseases & Conditions

Fibromyalgia

You hurt all over, and you frequently feel exhausted. Even after numerous tests, your doctor can't find anything specifically wrong with you. If this sounds familiar, you may have fibromyalgia.

Fibromyalgia is a chronic condition characterized by widespread pain in your muscles, ligaments and tendons, as well as fatigue and multiple tender points — places on your body where slight pressure causes pain.

Fibromyalgia occurs in about 2 percent of the population in the United States. Women are much more likely to develop the disorder than are men, and the risk of fibromyalgia increases with age. Fibromyalgia symptoms often begin after a physical or emotional trauma, but in many cases there appears to be no triggering event.

Doctors don't know what causes fibromyalgia, but it most likely involves a variety of factors working together. These may include:

• Genetics. Because fibromyalgia tends to run in families, there may be certain genetic mutations that may make you more susceptible to developing the disorder.
• Infections. Some illnesses appear to trigger or aggravate fibromyalgia.
• Physical or emotional trauma. Post-traumatic stress disorder has been linked to fibromyalgia.

Why does it hurt?
Current thinking centers around a theory called central sensitization. This theory states that people with fibromyalgia have a lower threshold for pain because of increased sensitivity in the brain to pain signals.

Researchers believe repeated nerve stimulation causes the brains of people with fibromyalgia to change. This change involves an abnormal increase in levels of certain chemicals in the brain that signal pain (neurotransmitters). In addition, the brain's pain receptors seem to develop a sort of memory of the pain and become more sensitive, meaning they can overreact to pain signals.

Fibromyalgia isn't progressive and generally doesn't lead to other conditions or diseases. It can, however, lead to pain, depression and lack of sleep. These problems can then interfere with your ability to function at home or on the job, or maintain close family or personal relationships. The frustration of dealing with an often-misunderstood condition also can be a complication of the condition.