According to womenshealth.gov,
Fibromyalgia, or fibromyalgia syndrome, is a condition that causes aches and pain all over the body. People with fibromyalgia often experience other symptoms, such as extreme tiredness or sleeping, mood, or memory problems. Fibromyalgia affects more women than men. The pain, extreme tiredness, and lack of sleep that fibromyalgia causes can affect your ability to work or do daily activities. Treatment can help relieve pain and help prevent flare-ups of symptoms.