Ankylosing spondylitis (AS) is a type of chronic (long-term) arthritis that affects parts of the spine, including bones, muscles and ligaments.
Our Health A-Z contains more information on Ankylosing spondylitis.
Chronic fatigue syndrome (CFS) causes persistent fatigue (exhaustion) that affects everyday life and doesn't go away with sleep or rest.
Our Health A-Z contains more information on Chronic fatigue syndrome.
Fibromyalgia, also called fibromyalgia syndrome, is a long-term condition which causes pain all over the body.
Our Health A-Z contains more information on Fibromyalgia.
Important: If you have these symptoms, they may be unrelated to any of these conditions listed. If you are concerned about your symptoms then you should see a doctor.