Attention-deficit hyperactivity disorder (ADHD) is a developmental
disorder characterized by developmentally inappropriate
levels of hyperactivity, impulsivity and inattention (APA
2013). The American Psychiatric Association’s (APA) Diagnostic
and Statistical Manual (DSM-5) states that patients must
have experienced a minimum of six symptoms of inattention
(e.g. failing to sustain attention in tasks or play activities, not
listening when being spoken to directly), or six symptoms
of hyperactivity/impulsivity (e.g. talking excessively, fidgeting
with hands or feet).