Experts believe that genetics influence this link between ADHD and dementia. A 2021 multigenerational study found that parents of a child living with ADHD have a 34% higher chance of developing dementia and a 55% higher chance of developing Alzheimer's disease, specifically.
Individuals with a genetic predisposition for ADHD and higher beta-amyloid levels were at an especially higher risk of cognitive decline and brain pathologies associated with Alzheimer's disease.
Many children with ADHD have other disorders as well as ADHD, such as behavior or conduct problems, learning disorders, anxiety and depression1,2. The combination of ADHD with other disorders often presents extra challenges for children, parents, educators, and healthcare providers.
Studies show working memory is less effective in children and adults who have ADHD than in those who don't. Long-term memory. People with ADHD often don't do well on tests of long-term memory. But scientists believe that has to do with how they process information.
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.
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.
Some patients with very late-onset ADHD may be misdiagnosed with dementia because their symptoms arise in the pre-elderly or elderly stages of life. Distinguishing between very late-onset ADHD and dementia may be useful in preventing misdiagnosis.
Forgetfulness in ADHD
When that's impaired, it can lead to annoying and disruptive symptoms like: Losing things, even things you just had a few minutes earlier. Missing appointments, dates, and other plans. Abandoning a task midway because you forgot you were doing it.
Untreated ADHD in adults can lead to mental health disorders like anxiety and depression. This is because ADHD symptoms can lead to focus, concentration, and impulsivity problems. When these problems are not managed effectively, they can lead to feelings of frustration, irritability, and low self-esteem.
As people age, they may face more challenges in their lives. This can include things like entering into new stages of development, such as adolescence or adulthood; increased stress levels; and competing demands on time, such as work and family responsibilities. These challenges can worsen ADHD symptoms in some people.
Genetics. 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 is not on the autism spectrum, but they have some of the same symptoms. And having one of these conditions increases the chances of having the other. Experts have changed the way they think about how autism and ADHD are related.
A 2021 multigenerational study found that parents of a child living with ADHD have a 34% higher chance of developing dementia and a 55% higher chance of developing Alzheimer's disease, specifically.
The greatest known risk factor for Alzheimer's and other dementias is increasing age, but these disorders are not a normal part of aging. While age increases risk, it is not a direct cause of Alzheimer's. Most individuals with the disease are 65 and older. After age 65, the risk of Alzheimer's doubles every five years.
Those who inherit one copy of APOE-e4 from their mother or father have an increased risk of developing Alzheimer's. Those who inherit two copies from their mother and father have an even higher risk, but not a certainty. In addition to raising risk, APOE-e4 may tend to make symptoms appear at a younger age than usual.
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. These symptoms usually occur together; however, one may occur without the other(s).
Anger is not on the official list of ADHD symptoms . However, many adults with ADHD struggle with anger, especially impulsive, angry outbursts . Triggers can include frustration, impatience, and even low self-esteem. A number of prevention tips may help adults with ADHD manage anger as a symptom.
In adults, the main features of ADHD may include difficulty paying attention, impulsiveness and restlessness. Symptoms can range from mild to severe. Many adults with ADHD aren't aware they have it — they just know that everyday tasks can be a challenge.
Does a brain with ADHD look different? The ADHD brain may look different on brain imaging scans compared to the non-ADHD brain. Differences include smaller sized areas in the ADHD brain and different levels of functional activity between regions. These differences may resolve with age, as the brain matures.
Misdiagnosed ADHD Symptom: Immaturity
But developmental delays and immaturity aren't always related to ADHD — they can point to autism, anxiety disorders, or even sensory processing issues.
Most adults with ADHD have always known that they think differently. They were told by parents, teachers, employers, spouses, and friends that they did not fit the common mold and that they had better shape up in a hurry if they wanted to make something of themselves.
Some of the common foods that can cause ADHD reactions include milk, chocolate, soy, wheat, eggs, beans, corn, tomatoes, grapes, and oranges. If you suspect a food sensitivity may be contributing to your child's ADHD symptoms, talk to your ADHD dietitian or doctor about trying an elimination diet.
At what age are symptoms of ADHD the worst? The symptoms of hyperactivity are typically most severe at age 7 to 8, gradually declining thereafter. Peak severity of impulsive behaviour is usually at age 7 or 8. There is no specific age of peak severity for inattentive behaviour.
Genetic screening cannot determine if a person has ADHD. Genetic screening may be helpful to a prescriber in selecting medications to treat ADHD and related conditions. Genetic screening may reveal information about other conditions that will need to be considered.