Fibromyalgia, an overview

Definition

By Mayo Clinic staff
Fibromyalgia is a disorder characterized by widespread musculoskeletal pain accompanied by fatigue, sleep, memory and mood issues. Researchers believe that fibromyalgia amplifies painful sensations by affecting the way your brain processes pain signals.
Symptoms sometimes begin after a physical trauma, surgery, infection or significant psychological stress. In other cases, symptoms gradually accumulate over time with no single triggering event.
Women are much more likely to develop fibromyalgia than are men. Many people who have fibromyalgia also have tension headaches, temporomandibular joint (TMJ) disorders, irritable bowel syndrome, anxiety and depression.
While there is no cure for fibromyalgia, a variety of medications can help control symptoms. Exercise, relaxation and stress-reduction measures also may help.

Symptoms

By Mayo Clinic staff

Tender points

The pain associated with fibromyalgia often is described as a constant dull ache, typically arising from muscles. To be considered widespread, the pain must occur on both sides of your body and above and below your waist.

Fibromyalgia is characterized by additional pain when firm pressure is applied to specific areas of your body, called tender points. Tender point locations include:

• Back of the head
• Between shoulder blades
• Top of shoulders
• Front sides of neck
• Upper chest
• Outer elbows
• Upper hips
• Sides of hips
• Inner knees

Fatigue and sleep disturbancesPeople with fibromyalgia often awaken tired, even though they report sleeping for long periods of time. Sleep is frequently disrupted by pain, and many patients with fibromyalgia have other sleep disorders, such as restless legs syndrome and sleep apnea, that further worsen symptoms.
Coexisting conditionsMany people who have fibromyalgia also may have:

• Fatigue
• Anxiety
• Depression
• Endometriosis
• Headaches
• Irritable bowel syndrome

Causes

By Mayo Clinic staff
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.