Chronic fatigue syndrome is a fatigue characterized by a disorder of uncertain cause that is characterized by persistent profound fatigue usually accompanied by impairment in short-term memory or concentration, sore throat, tender lymph nodes, muscle or joint pain, and headache unrelated to any preexisting medical condition and that typically has an onset at about 30 years of age. [ url:http://www2.merriam-webster.com/cgi-bin/mwmednlm?book=Medical&va=chronic%20fatigue%20syndrome ]
Term information
Chronic fatigue syndrome is a fatigue characterized by a disorder of uncertain cause that is characterized by persistent profound fatigue usually accompanied by impairment in short-term memory or concentration, sore throat, tender lymph nodes, muscle or joint pain, and headache unrelated to any preexisting medical condition and that typically has an onset at about 30 years of age.