The main symptom experienced by people with CFS is persistent mental and physical fatigue that feels overwhelming and unlike normal tiredness. Other symptoms may include painful muscles and/or joints, sore throat, headaches, pins and needles, dizziness and sensitivity to light and noise. CFS has some marked similarities to fibromyalgia, a disorder involving widespread musculoskeletal pain and fatigue; however, the component of muscle pain in fibromyalgia is generally higher.
