chronic fatigue syndrome. a complex disorder characterized by extreme fatigue that lasts six months or longer, and does not improve with rest or is worsened by physical or mental activity. Other symptoms can include weakness, muscle pain, impaired memory and/or mental concentration, and insomnia. The cause is unknown.
Stands for Chronic Fatigue Syndrome. Also known as CFIDS, ME, PVS, PVFS, and a bunch of less complimentaly things. For basic info, try my local CFS/ME society - it contains some great information sheets with the basic details on it. For some more advanced stuff, try my CFS/FMS pages.
hronic atigue yndrome - An illness characterized by prolonged, debilitating fatigue and multiple nonspecific symptoms such as headaches, recurrent sore throats, muscle and joint pains, and cognitive complaints. Profound fatigue, the hallmark of the disorder, can come on suddenly or gradually and persists or recurs throughout the period of illness.