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ADHD was officially known as attention deficit disorder (ADD) from 1980 to 1987; prior to the 1980s, it was known as hyperkinetic reaction of childhood. Symptoms similar to those of ADHD have been described in medical literature dating back to the 18th century.
In the mid-1980s, it was proposed that as opposed to the then accepted dichotomy of ADD with or without hyperactivity (ADD/H, ADD/noH), instead a three-factor model of ADD was more appropriate, consisting of hyperactivity-impulsivity, inattention-disorganization, and slow tempo subtypes. [67]
Hyperactivity has long been part of the human condition, although hyperactive behaviour has not always been seen as problematic. [1] [page needed]The terminology used to describe the symptoms of attention deficit hyperactivity disorder, or ADHD, has gone through many changes over history, including "minimal brain damage", "minimal brain dysfunction", "learning/behavioral disabilities" and ...
In comparison, professionals in the U.S. used a much broader definition of the term ADHD until recently. [32] This meant up to 10% of children in the U.S. were described as having ADHD. Current estimates suggest that ADHD is present internationally in about 7.2% of children. [33] ADHD is diagnosed around 5 times more often in boys than girls.
The primary definition of perseveration in biology and clinical psychiatry involves some form of response repetition or the inability to undertake set shifting (changing of goals, tasks or activities) as required, and is usually evidenced by behaviours such as words and gestures continuing to be repeated despite absence or cessation of a stimulus.
Adult Attention Deficit Hyperactivity Disorder is the persistence of attention deficit hyperactivity disorder (ADHD) into adulthood. It is a neurodevelopmental disorder, meaning impairing symptoms must have been present in childhood, except for when ADHD occurs after traumatic brain injury.
Attention 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 developmentally-inappropriate. [3] [9] [10] [11]
ADD Attention deficit disorder: ADD-RT Attention deficit disorder – residual type ADEM Acute disseminated encephalomyelitis: ADHD Attention deficit hyperactivity disorder: AERD Aspirin exacerbated respiratory disease: AF or A-fib Atrial fibrillation: AGS Aicardi–Goutières syndrome: AH Acquired hemophilia AHA Acquired hemophilia A AHB