Chronic fatigue and fibromyalgia are not diseases. They are conditions of being.
Multiple stressors (food sensitivities, nutrient depletions, toxins, infections, inflammation, sleep deprivation, lack of exercise, early developmental trauma amongst others) affect the normal homeostatic mechanisms in the body (gut function, immune system, hormones, neurotransmitters, detoxification), leading to decompensation of multiple systems in the body/mind complex. An extensive history taking with time-line stressors needs to be taken, along with extensive laboratory testing. There are no easy short cuts or treatment options.