To meet the "Diagnostic and Statistical Manual of Mental Disorders" (DSM-5) criteria, GAD symptoms must occur for at least ...

Via decreased negative and increased positive affect pre- and post- positive/relief events, worry led to enhanced positive emotional contrasts.

Diagnostic criteria have changed dramatically since DSM-II, so that now GAD is classified independently of other psychiatric disorders. The lifetime prevalence has been estimated at 5% in the ...

The prevalence was lowest in the youngest age group and increased with age: The prevalence in women aged 45 and older was 3.5% for those with current GAD and 10.3% for lifetime occurrence of GAD.