I have had the same exact symptoms, mine has evolved to joint pain, I am a 22 male, ive gone to different doctors and blood tests every doctor says there is nothing wrong with me an d I feel very depressed because I would like to get to the the cause, please keep informed if all of a sudden you get a diagnosis.I also feel a very intense itch at my upper left back behind the heart if you will, I constantly have to scratch with a wire brush, also have developed blurred vision, and dizziness