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Attention deficit hyperactivity disorder (ADHD) [1] is a neurodevelopmental disorder characterized by symptoms of inattention, hyperactivity, impulsivity, and emotional dysregulation that are excessive and pervasive, impairing in multiple contexts, and developmentally-inappropriate. [9]
ADHD was found more often in boys, at a rate of 2:1. [10] The most common form of ADHD was inattentive (2.95% of total population), followed by hyperactive/impulsive (2.77%), then combined (2.44%). [10] While differences in prevalence rate were found internationally, it is not clear whether this reflects true differences or changes in ...
People with classic ADHD are more likely to be rejected in these situations because of their social intrusiveness or aggressive behavior. Compared to children with CDS, they are also much more likely to show antisocial behaviours like substance abuse, oppositional-defiant disorder or conduct disorder (frequent lying, stealing, fighting etc.). [18]
ADHD affects 8 to 11% of children in the school going age. [citation needed] ADHD is characterised by significant levels of hyperactivity, inattentiveness, and impulsiveness. There are three subtypes of ADHD: predominantly inattentive, predominantly hyperactive, and combined (which presents as both hyperactive and inattentive subtypes). [27]
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. Reasons for this disparity are debated, but likely involve both biological and social/diagnostic factors.
Children exposed to lead at a young age will also have an increased chance of developing ADHD. Brain injuries could cause ADHD, yet only a small number of children diagnosed fit into this category. Researchers have looked into sugar intake as the cause of ADHD, but have found little to support that theory. [13]
Both ADHD and bipolar disorder can cause extreme mood changes, but there’s a key difference. Bipolar disorder involves cycles of depression and mania and hypomania, which can last for days or weeks.
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 ...