ADHD or just immature?

Attention-deficit hyperactivity disorder (ADHD) is typically diagnosed in childhood and manifests as an inability to sustain attention and control activity levels and impulse control. Some reports have indicated a prevalence of up to 15 percent in Western countries. Although the causes of ADHD are still unknown, a new study found that a child's age at school entry may have an effect on the diagnosis of ADHD.

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