![]() ![]() For most people with ADHD, many genetic and environmental risk factors accumulate to cause the disorder. The precise causes of ADHD are unknown in the majority of cases. Although people with ADHD struggle to sustain attention on tasks that entail delayed rewards or consequences, they are often able to maintain an unusually prolonged and intense level of attention for tasks they do find interesting or rewarding this is known as hyperfocus.ĪDHD represents the extreme lower end of the continuous (bell curve) dimensional trait of executive functioning and self-regulation, which is supported by twin, brain imaging and molecular genetic studies. ![]() ADHD is associated with other neurodevelopmental and mental disorders as well as some non-psychiatric disorders, which can cause additional impairment, especially in modern society. In children, problems paying attention may result in poor school performance. ĪDHD symptoms arise from executive dysfunction, and emotional dysregulation is often considered a core symptom. alpha-2a agonists ( guanfacine XR, clonidine XR)Ġ.8–1.5% (2019, using DSM-IV-TR and ICD-10) Īttention deficit hyperactivity disorder ( ADHD) is a neurodevelopmental disorder characterised by executive dysfunction occasioning symptoms of inattention, hyperactivity, impulsivity and emotional dysregulation that are excessive and pervasive, impairing in multiple contexts, and otherwise age-inappropriate.non-stimulants ( atomoxetine, viloxazine).CNS stimulants ( methylphenidate, amphetamine).
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