Abstract Purpose of Review The traditional definition of Attention-Deficit/Hyperactivity
Disorder (ADHD), assuming onset in childhood, has been challenged by evidence from four …

Attention‐deficit/hyperactivity disorder (ADHD) is conceptualized as an early onset
childhood neurodevelopmental disorder. Prevalence in adults is around two‐thirds that in …

Attention deficit/hyperactivity disorder (ADHD) is characterized as a neurodevelopmental
disorder. However, data from several recent studies suggest that there may be adults who …

Background Adult ADHD has been assumed to be a continuation of childhood‐onset ADHD.
However, recent studies have identified individuals with ADHD in adulthood who have not …

Objective: Despite a prevailing assumption that adult ADHD is a childhood-onset
neurodevelopmental disorder, no prospective longitudinal study has described the …

OBJECTIVE: To examine the validity of the DSM-IV requirement of an age of onset of
impairment due to symptoms before 7 years of age for the diagnosis of attention …

Objective: Adolescents and young adults without childhood attention deficit hyperactivity
disorder (ADHD) often present to clinics seeking stimulant medication for late-onset ADHD …

Background: Prior follow-up studies of attention-deficit/hyperactivity disorder (ADHD) have
mostly been from North America. They have provided a good deal of information about …

Importance The requirement of a childhood onset has always been a key criterion for the
diagnosis of attention-deficit/hyperactivity disorder (ADHD) in adults, but recently this …

Background Previous research has suggested that there is substantial heterogeneity in the
developmental trajectories of attention-deficit/hyperactivity disorder (ADHD) symptoms …