ADHD brains have low levels of a neurotransmitter called norepinephrine. Norepinephrine is linked arm-in-arm with dopamine. Dopamine is the thing that helps control the brain's reward and pleasure center. The ADHD brain has impaired activity in four functional regions of the brain.
At the brain circuitry level, the superior longitudinal fasciculus (SLF) and cortico-limbic areas are dysfunctional in individuals with ADHD.
ADHD affects brain functioning in several ways. The condition has links to abnormal cognitive, behavioral, and motivational functioning. ADHD can affect the regulation of moods, emotions, and brain cell connections. It can also affect communication between different areas of the brain.
Neuroimaging studies have revealed the structural differences in the ADHD brain. Several studies have pointed to a smaller prefrontal cortex and basal ganglia, and decreased volume of the posterior inferior vermis of the cerebellum — all of which play important roles in focus and attention.
The mind of a person with ADHD is full of the minutiae of life (“Where are my keys?” “Where did I park the car?”), so there is little room left for new thoughts and memories. Something has to be discarded or forgotten to make room for new information. Often the information individuals with ADHD need is in their memory…
For many people affected by ADHD, key symptoms like inattention, forgetfulness, and disorganization negatively affect their relationships. The partners without ADHD can misinterpret their partners' intentions, resulting in increased frustration and resentment.
People who have ADHD frequently experience emotions so deeply that they become overwhelmed or “flooded.” They may feel joy, anger, pain, or confusion in a given situation—and the intensity may precede impulsive behaviors they regret later.
ADHD was the first disorder found to be the result of a deficiency of a specific neurotransmitter — in this case, norepinephrine — and the first disorder found to respond to medications to correct this underlying deficiency. Like all neurotransmitters, norepinephrine is synthesized within the brain.
On average, the brains of ADHD children matured about three years later than those of their peers. Half of their cortex has reached their maximum thickness at age 10 and a half, while those of children without ADHD did so at age 7 and a half; you can see an evocative Quicktime video of this happening online.
What is the cause or basis of ADHD? It is an impulse disorder with genetic components that results from imbalances of neurotransmitters.
Attention-deficit/hyperactivity disorder (ADHD) is one of the most common mental disorders affecting children.
As you know, one trademark of ADHD is low levels of the neurotransmitter dopamine — a chemical released by nerve cells into the brain. Due to this lack of dopamine, people with ADHD are "chemically wired" to seek more, says John Ratey, M.D., professor of psychiatry at Harvard Medical School in Boston.
Traumatic brain injury (TBI) is a frequent cause for hospitalization in young children and teenagers. It's associated with developing mental conditions, including secondary ADHD, a form of ADHD that develops following an injury.
Adults with ADHD may find it difficult to focus and prioritize, leading to missed deadlines and forgotten meetings or social plans. The inability to control impulses can range from impatience waiting in line or driving in traffic to mood swings and outbursts of anger. Adult ADHD symptoms may include: Impulsiveness.
Studies show that children with ADHD have a significant deficit in working memory compared to their typically developing peers. Learning about what it means to have poor working memory is the key to understanding many of your child's challenges.
Thayer's study shows that the ADHD group of children had larger and more frequent variations. Fathers with ADHD will pass this code discrepancy to offspring. Barkley explains that the heritability of ADHD runs around 80 percent. Genetics account for 80 percent of the components that define ADHD.
ADHD tends to run in families and, in most cases, it's thought the genes you inherit from your parents are a significant factor in developing the condition. Research shows that parents and siblings of someone with ADHD are more likely to have ADHD themselves.
ADHD, also called attention-deficit disorder, is a behavior disorder, usually first diagnosed in childhood, that is characterized by inattention, impulsivity, and, in some cases, hyperactivity.
If your child has ADHD, they may be low in dopamine but high in something called dopamine transporters. That's because their low dopamine may actually result from having too many of the transporters that take dopamine out of their brain cells.
The brain's frontal lobes, which are involved in ADHD, continue to mature until we reach age 35. In practical terms, this means that people with ADHD can expect some lessening of their symptoms over time. Many will not match the emotional maturity of a 21-year-old until their late 30's.
Stimulants are believed to work by increasing dopamine levels in the brain. Dopamine is a neurotransmitter associated with motivation, pleasure, attention, and movement. For many people with ADHD, stimulant medications boost concentration and focus while reducing hyperactive and impulsive behaviors.
Individuals with ADHD often experience social difficulties, social rejection, and interpersonal relationship problems as a result of their inattention, impulsivity and hyperactivity. Such negative interpersonal outcomes cause emotional pain and suffering.
When you have ADHD, your nervous system overreacts to things from the outside world. Any sense of rejection can set off your stress response and cause an emotional reaction that's much more extreme than usual. Sometimes the criticism or rejection is imagined, but not always.
Most adults with ADHD don't know how to express feelings. Some of us have learned to sublimate our emotions, because we think we are unacceptable, but unexpressed feeling finds a way to let us know it is there. Sometimes it presents as physical symptoms, like a headache or an upset stomach.