groups of common nonarticular rheumatic disorders characterized by pain, tenderness, and stiffness of muscles, tendons, and surrounding tissues; examples include lumbago and charleyhorse
Fibromyalgia syndrome is a rheumatic disorder with chronic muscle pain that seems to have no physical cause. This pain is usually described as burning, throbbing, shooting and stabbing. People with fibromyalgia have other symptoms such as: bad headaches, insomnia, depression, anxiety, dry skin, dry mouth, dizziness, memory impairment, PMS, palpitations. The pain and stiffness occurring with fibromyalgia normally is worse in the morning. Women are affected by fibromyalgia syndrome more then men. The disorder can go away then come back. Fibromyalgia is believed to be mainly an immune system disorder. It appears also related to CFS chronic fatigue syndrome.