![]() ![]() ![]() ![]() The environmental risks for ADHD most often exert their influence in the prenatal period. 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. ĪDHD represents the extreme lower end of the continuous dimensional trait (bell curve) of executive functioning and self-regulation, which is supported by twin, brain imaging and molecular genetic studies. This is a mental state in which a person is completely absorbed in a task to the point of apparently ignoring or "tuning out" everything else, often with difficulty disengaging and can be related to risks such as for internet addiction and types of offending behaviour. Īlthough people with ADHD struggle to persist on tasks with temporally delayed consequences, they may be able to maintain an unusually prolonged level of attention for tasks they do find intrinsically interesting or immediately rewarding this is known as hyperfocus (more colloquially) or perseverative responding. 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. Difficulties with self-regulation such as time management, inhibition and sustained attention may result in poor academic performance, unemployment and numerous health risks, collectively predisposing to a diminished quality of life and a direct average reduction in life expectancy of 13 years. 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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