ADHD is associated with abnormally low levels of the neurotransmitters transmitting between the prefrontal cortical area and the basal ganglia i.e., dopamine and noradrenaline. Dopamine is closely associated with reward centers in the brain, and also interacts with other potent neurotransmitters to regulate mood.
At the brain circuitry level, the superior longitudinal fasciculus (SLF) and cortico-limbic areas are dysfunctional in individuals with ADHD.
Research has shown that in children with ADHD, the prefrontal cortex matures more slowly than typically developing kids. It is also slightly smaller in size. Similarly, the cerebellum, hippocampus, and amygdala are also thought to be smaller in volume in kids with ADHD.
The ADHD brain has been described as an “interest-based nervous system”: It seeks high-stimulation situations, stronger incentives, and more immediate rewards, which trigger a quick and intense release of dopamine and with it a rush of motivation. Hyperfocus. Dopamine is the brain's most intense reward.
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…
People with ADHD will have at least two or three of the following challenges: difficulty staying on task, paying attention, daydreaming or tuning out, organizational issues, and hyper-focus, which causes us to lose track of time. ADHD-ers are often highly sensitive and empathic.
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.
The largest review ever of ADHD patient brain scans was carried out at Radboud University Nijmegen Medical Centre and published in 2018. Parts of the ADHD brain mature at a slower pace (approximately one to three years) and never reach the maturity of a person who does not have ADHD.
Executive functions have other roles which affect how someone thinks. In people with ADHD, these executive dysfunctions impact thinking in numerous ways. People with ADHD don't really think faster than people without it, but it can sometimes seem like they do.
The ADHD brain also gets easily consumed. This means ADHD and overthinking kind of go hand in hand. The ADHD brain grasps hold of your thoughts and runs away with them, while emotions keep the engine running.
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.
Though brain scans cannot yet reliably diagnose ADHD, some scientists are using them to identify environmental and prenatal factors that affect symptoms, and to better understand how stimulant medications trigger symptom control vs. side effects.
These may include hyperfocus, resilience, creativity, conversational skills, spontaneity, and abundant energy. Many people view these benefits as “superpowers” because those with ADHD can hone them to their advantage. People with ADHD have a unique perspective that others may find interesting and valuable.
“Self-medicating” with argument is a prime example. Many people with ADHD are, if anything, argument-averse. And certainly, you needn't have ADHD to be an argumentative son of a gun. Yet, some individuals with ADHD do habitually bait others into heated disagreements.
The symptoms may peak in severity when the child is seven to eight years of age, after which they often begin to decline. By the adolescent years, the hyperactive symptoms may be less noticeable, although ADHD can continue to be present.
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.
With ADHD children, we use "The 30% Rule" to set realistic expectations. The 30% Rule goes like this. Take the age of your ADHD child and subtract 30% from it. If your son is 12, for example, subtracting 30% of 12 (3.6 years) from 12 gives you 8.4.
You can inherit genes that boost risk for ADHD from your mother, from your father or from both parents. In a recent Norwegian study, inherited risk was somewhat higher when a child's mother had ADHD compared to their father, but researchers weren't certain why that would be.
Alcohol is a depressant. That is why many people use it to relax. In the case of people afflicted with ADHD, many will use alcohol to calm down the hyperactivity.
Physical and mental health problems.
The symptoms of ADHD can contribute to a variety of health problems, including compulsive eating, substance abuse, anxiety, chronic stress and tension, and low self-esteem.
Differences in emotions in people with ADHD can lead to 'shutdowns', where someone is so overwhelmed with emotions that they space out, may find it hard to speak or move and may struggle to articulate what they are feeling until they can process their emotions.
With ADHD, a child or teen may have rapid or impulsive speech, physical restlessness, trouble focusing, irritability, and, sometimes, defiant or oppositional behavior.
By Dr. David Velkoff. Ring of Fire ADD is a type of ADD characterized by abnormally increased activity in multiple areas of the brain, which in individuals on qEEG brain mapping scans can appear as over activity or overstimulation.