CHRONIC FATIGUE
SYNDROME
n Has been called: chronic EBV syndrome,
postviral fatigue syndrome, “yuppie flu”
n 1988 CDC convened researchers & clinicians
to define & classify CFS
n 1994 international group proposed guidelines
for CFS
n CDC reported prevalence of 4-11
cases/100,000 population
n In US most cases occur in young to middle-
aged white women