Criteria for Chronic Fatigue Syndrome
Severe disabling fatigue of at least a 6-month duration that:
Affects both physical and mental functioning
Is present for more than 50% of the time
Other symptoms, particularly myalgia and sleep and mood disturbances, may be present.
--------------------------------------------------------------------------------
Additional Symptoms:
Although the symptoms heretofore listed are the official diagnostic criteria, many patients with Chronic Fatigue Syndrome present a variety of other symptoms, including:
Pain (almost universal in chronic fatigue)
Allergies
Chemical sensitivities
Secondary infections, including Candida and viral infections
Cognitive impairment, including short-term memory loss, difficulty concentrating and doing word searches and math problems
Digestive disturbances, such as chronic constipation or diarrhea
Night sweats or spontaneous daytime sweats, unaccompanied by fever
Headaches, migraines
Weakness (paresis), muscle fatigue, and pain (fibromyalgia)
Premenstrual syndrome (PMS)
Sleep disorders, including excessive sleep (hypersomnia), light sleep, or an inability to sleep for more than an hour (hyposomnia), disturbing nightmares
A period of 1-3 hours after awakening during which patients are too exhausted to get out of bed (dysania)
Cystitis (inflammation of the urinary bladder), particularly interstitial cystitis in which urine cultures are negative
Vision and eye problems, including sensitivity to light (photophobia), dry eyes, tunnel vision, night blindness, and difficulty focusing