A chronic disorder of unknown etiology characterized by pain, stiffness, and tenderness in the muscles of neck, shoulders, back, hips, arms, and legs. Other signs and symptoms include headaches, fatigue, sleep disturbances, and painful menstruation.

A common nonarticular rheumatic syndrome characterized by myalgia and multiple points of focal muscle tenderness to palpation (trigger points). Muscle pain is typically aggravated by inactivity or exposure to cold. This condition is often associated with general symptoms, such as sleep disturbances, fatigue, stiffness, HEADACHES, and occasionally DEPRESSION. There is significant overlap between fibromyalgia and the chronic fatigue syndrome (FATIGUE SYNDROME, CHRONIC). Fibromyalgia may arise as a primary or secondary disease process. It is most frequent in females aged 20 to 50 years. (From Adams et al., Principles of Neurology, 6th ed, p1494-95)

A condition causing pain and tender spots throughout the body.

An acute, subacute, or chronic painful state of muscles, subcutaneous tissues, ligaments, tendons, or fasciae caused by a number of agents such as trauma, strain, occupation, exposure, posture, infection, or arthritis.

Chronic, diffuse, non-inflammatory musculoskeletal pain disorder with characteristic tender points of neck, back, shoulders, hips, arms and legs, and associated with fatigue and sleep disturbance. Other symptoms may include headaches, abdominal discomfort, and depression/anxiety. It may also be associated with a primary rheumatic disorder.

Fibromyalgia is chronic condition that causes pain all over the body, fatigue, and other symptoms. People with fibromyalgia may be more sensitive to pain than people who don't have it. This is called abnormal pain perception processing. The exact cause of fibromyalgia is unknown. Researchers think that certain things might contribute to its cause: Stressful or traumatic events, such as car accidents; Repetitive injuries; Illnesses such as viral infections. Sometimes, fibromyalgia can develop on its own. It can run in families, so genes may play a role in the cause. Anyone can get fibromyalgia, but it is more common in Women; they are twice as likely to have fibromyalgia; Middle-aged people; People with certain diseases, such as lupus, rheumatoid arthritis, or ankylosing spondylitis; People who have a family member with fibromyalgia.

(fibromyositis) Inflammation and fibrous degeneration of a muscle.

Fibromyalgia is a common, incompletely understood nonarticular disorder characterized by generalized aching (sometimes severe); widespread tenderness of muscles, areas around tendon insertions, and adjacent soft tissues; muscle stiffness; fatigue; mental cloudiness; poor sleep; and a variety of other somatic symptoms. Diagnosis is...

Fibromyalgia is currently understood to be a disorder of central pain processing or a syndrome of central sensitivity. Clauw describes the syndrome as a diffuse problem of sensory �volume control� such that patients have a lower threshold of pain and of other stimuli, such as heat, noise, and strong odors.

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 and spinal cord process painful and nonpainful signals.

Fibromyalgia is a chronic pain syndrome diagnosed by the presence of widespread body pain (front and back, right and left, both sides of the diaphragm) for at least 3 months in addition to tenderness (digital palpation at an approximate force of 4 kg) of at least 11 out of 18 designated tender point sites as defined by the American...

Fibromyalgia, chronic syndrome that is characterized by musculoskeletal pain, often at multiple anatomical sites, that occurs in the absence of an identifiable physical or physiological cause. Fibromyalgia affects about 2 to 8 percent of individuals worldwide. It is most commonly diagnosed in young...