My best friend has it from an accident at work. Some days it's not too bad and other times it's really hard on her. She has had to search really hard to find a Doc. Most know little about it and try to treat the pain with meds that make her so tired she can't even function. She finally found a new one that is listening to her and helping her manage rather than trying to force his ideas. It can spread to other parts of you body as time goes by so just be aware when you get a seemingly new problem.