I have read so much about so many possible "markers" for CFIDS and much of it is contradictory and confusing. For example, Dr. Cheney says almost everyone shows evidence of vestibular dysfunction -- flunks the Romberg augmented tandem stance -- and has at least some cognitive dysfunction. There is the new thing about ciguatera. I have read about ANA, low molecular weight RNA, various viral titres, excess lactic acid. Then I read Dr. Komaroff saying only about 2 percent of people with chronic fatigue truly have chronic fatigue syndrome. So how do I even get to step one, which is to know whether I have it or not?