| Symptoms Used to Diagnose CFS* | • Increased malaise following physical activity or mental exertion | | • Sleep disturbances (insomnia or hypersomnia) | | • Difficulties with memory and concentration | | • Persistent muscle discomfort or myalgia | | • Painful lymph nodes esp. in the neck or armpit | | • Migratory arthralgia without joint swelling or redness | | • Headache | | • Sore throat | | Other Symptoms | • Brain fog | | • Difficulty maintaining an upright position, dizziness, balance problems, or fainting | | • Allergies or sensitivities to foods, odors, chemicals, medications, or noise | | • Irritable bowel syndrome | | • Chills and night sweats | | • Visual disturbances (sensitivity to light, blurring, eye pain) | | • Depression or mood problems (irritability, mood swings, anxiety, panic attacks) |
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* These symptoms must have lasted at least 6 months.
SOURCE: http://www.cdc.gov/cfs/symptoms/index.html