The most common symptom or early sign of fibromyalgia is chronic pain that extends throughout the body, according to WebMD. People with this condition suffer from fatigue and from tenderness in the joints, muscles, ligam... More »

Because pain in certain areas of the body is one sign of fibromyalgia, doctors may press on tender points to help them diagnose or assess this medical condition, relates WebMD. There are 18 tender points in the body link... More »

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Symptoms of postural orthostatic tachycardia syndrome include palpitations, lightheadedness and dizziness. Other symptoms are blurred vision, weakness, tremulousness and feelings of anxiety, according to About.com. These... More »

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The tender points on a person with fibromyalgia are nine pairs of coin-sized points on the body that hurt when pressed, according to WebMD. They are around but not in the joints. Physicians use these points to diagnose f... More »

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A positive antinuclear antibody test indicates the presence of antibodies that may attack the patient's own body, a result with a tenuous link to fibromyalgia, says WebMD. Antinuclear antibodies suggest a possible autoim... More »

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Possible causes of chronic pain include arthritis, multiple sclerosis, fibromyalgia and shingles, according to WebMD. Other possible causes of chronic pain include low back pain, headaches and nerve damage. Chronic pain ... More »

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Fibromyalgia is chronic pain throughout the body that primarily affects the muscles and nerves, according to the National Institute of Arthritis and Musculoskeletal and Skin Diseases. It is not the same as arthritis pain... More »

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