Hyperactive Dopamine Receptors Cause Of Tics
- 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 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 »
Tics
Source: Harvard Decision Guide
Prevention There is no way to prevent motor or vocal tics unless the tic was brought on by the use of stimulant drugs, in which case stopping the... Read more »
Facial tics
Source: ADAM Encyclopedia
A facial tic is a repeated spasm, often involving the eyes and muscles of the face.Alternative NamesTic - facial; Mimic spasmCauses, incidence, and... Read more »
Attention deficit hyperactivity disorder (ADHD)
Source: ADAM Encyclopedia
ADHD is a problem with inattentiveness, over-activity, impulsivity, or a combination. For these problems to be diagnosed as ADHD, they must be out of... Read more »
Attention Deficit/Hyperactivity Disorder
Source: HealthCentral Encyclopedia
Attention Deficit/Hyperactivity Disorder (ADHD) is a genetically determined hereditary disorder. It is a syndrome characterized by chronic behavior... Read more »
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