If you have been diagnosed with this disease, it is important to be aware of the symptoms so that you can manage your condition and get the best possible treatment. The most common symptom of this disease is fatigue, which can make everyday activities difficult to impossible. Other symptoms include muscle pain and weakness, joint pain, headaches, memory problems and difficulty concentrating. In some cases, people may also experience depression and anxiety. If you are experiencing any of these symptoms, it is important to see your doctor so that they can make a proper diagnosis and develop a treatment plan that is right for you.