Dopamine Hyperactivity?
- Attention-Deficit Hyperactivity Disorder - Risk Factors
- Highlights
- Introduction
- Risk Factors
- Diagnosis
- Complications
- Other Disorders Associated with ADHD
Causes
Brain Structure
Research using advanced imaging techniques shows there is a difference in the size of certain parts of the brain in children with ADHD compared to children who do not have ADHD. The areas showing change include the prefrontal cortex, the caudate nucleus and globus pallidus, and the cerebellum.
Brain Chemicals
Abnormal activity of certain brain chemicals in the prefrontal cortex may contribute to ADHD. The chemicals dopamine and norepinephrine are of special interest. Dopamine...
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From Our Experts
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Dopamine
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Managing Hyperactivity in Children with ADHD
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Is Sugar to Blame for Hyperactivity?
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From Our Sources
Attention-Deficit Hyperactivity Disorder: Medications
Source: ADAM Encyclopedia
Several types of medication are used to treat ADHD.Psychostimulants: Methylphenidate (Ritalin) and Similar DrugsPsychostimulants are the primary... Read more »
New MRI Can Track Dopamine in the Brain
Scientists at MIT have developed a new type of magnetic resonance imaging (MRI) sensor that can track the movement of dopamine in the brain. The... Read more »
Hyperactivity
Source: ADAM Encyclopedia
Hyperactivity is a state of too much muscle activity. This term is also used to describe a situation when a particular portion of the body is too... Read more »
Hyperactivity
Source: ADAM Encyclopedia
Activity - increased; Hyperkinetic behaviorHome CareA child who is normally very active often responds well to specific directions and a program of... Read more »
Hyperactivity and sugar
Source: ADAM Encyclopedia
Hyperactivity refers to increased movement, impulsiveness, distractibility, and decreased attention span. A popular but controversial belief is that... Read more »
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