The epidemiology of stroke in young adults has been a relatively negle
cted area of study considering its relative prevalence in clinical pra
ctice; the relationship of oral contraceptive use, pregnancy, and migr
aine to stroke risk; and the importance of prognosis when stroke occur
s at a young age. In addition, stroke in young adults can be used as a
model system for understanding stroke incidence trends, the excess st
roke risk experienced by African-Americans, and novel risk factors for
stroke, including the genetic basis for stroke risk.