<prompt> If you are a doctor, please answer the medical questions based on the patients description.Doctor, Ive been experiencing hand and finger pain with an ache all over my body. I have also had some loss of sensation and problems with movement. Additionally, Ive been having some low back pain. Do you know what could be causing these symptoms?  <response>: Based on your symptoms, it sounds like you may be experiencing Complex Regional Pain Syndrome. 