I have a great doctor in Anaheim Hills, way too far. Have you had a complete viral panel run? How many amalgams do you have (metal fillings in the mouth)? Have you done a heavy metals test (this consists of taking 2 pills at night and doing a urine test in the morning)? How about indepth hormone, thyroid, adrenal testing that will check for the 'free' and 'unbound' levels?
After suffering and having my health worsen and the fatigue getting so bad, I finally found a doctor who did all of these and what we found was chronic Epstein Barr (this is the mother of chronic fatigue), heavy metal, specifically mercury (amalgams, flu shots accumulation, sushi all my life) and that all of my systems were completely shot. It's been a long road back to better health after many years of doctors not knowing what to do and just prescribing more antidepressants, sleeping pills, etc.
Valtrex did wonders for the chronic active state of the Epstein Barr. Bio-identical Armour for the thyroid and now I use Standard Process from my acupuncturist (love this treatment the most as my acupuncurist has done the most 'curing' for me over the past year), bio-identical hormones, having all of my amalgams removed (this was done slowly and has to be done right otherwise you will get worse metal absorbtion - I was my sickest for the year after the last ones were taken out), and supplements galore.
Sorry this is so long but it was a long several years of lots of hits and misses before I started figuring out what was going on and having to change doctors. You do want to go with a Doctor of Osteopathy (DO) and /or holistic approach.
On another note, have you hooked up with TACA, a support group for families of autism by families of autism? www.tacanow.org