Nader, I hope your trusted doctor will continue to look for a cause for your discomfort. My blood tests --including thyroid, CBC and Metabolic panel -- are normal some months and swinging wildly in other months. The same with the other tests you mentioned.

If the tests come back normal, I urge you to ask your trusted doctor if he can recommend a stress reduction program and also if he will re-test you in six months time. It took a very long time for me to get a correct diagnosis because my tests did not stay at one level. Then finally they did.

My doctor said he knew there was something wrong with my auto-immune responses but he could not diagnose or treat me until his exams and the tests gave him a clearer indication of what to do. That's why he kept testing me every 4-6 months. It took several years to get a clear picture.

I feel much better when I eat well, avoiding processed food. Lifting weights helps, too, even though I am abnormally sore afterward. Walking at a moderate rate works much better to alleviate symptoms than any other aerobic exercise.

If you do have an auto-immune disorder, it's important to avoid too much exposure to direct sunlight, even though windows. I walk in the early morning and early evening. Also try to avoid extreme temperature changes, such as going from cold air-conditioned building to the hot outdoors whenever you can. It shocks your system.

Those are all things you can put into practice while you're waiting for the doctor to make a diagnosis, which unfortunately may take a long time. At first they feel limiting, but after becoming much less symptomatic, I began to feel a sense of freedom I did not have before. Instead of feeling limited by all the restrictions, I feel relieved and free.

I wish you the best.