Dictionary of Cancer Terms
View in Spanish: Síndrome de fatiga crónica
Chronic fatigue syndrome (KRAH-nik fuh-TEEG SIN-drome)
A condition lasting for more than 6 months in which a person feels tired most of the time and may have trouble concentrating and carrying out daily activities. Other symptoms include sore throat, fever, muscle weakness, headache, and joint pain. Also called CFS.
Source: National Cancer Institute Dictionary of Cancer Terms, available at www.cancer.gov/dictionary.