About ADHD Symptoms


Could someone you know have ADHD? Maybe they’re inattentive. Or they might be hyperactive and impulsive. They might have all those traits.

There are three groups of symptoms:

  1. Inattention
  2. Hyperactivity
  3. Impulsivity

Get the facts on all of them, and learn examples of behaviors that can come with each.


You might not notice it until a child goes to school. In adults, it may be easier to notice at work or in social situations.

The person might procrastinate, not complete tasks like homework or chores, or frequently move from one uncompleted activity to another.

They might also:

  • Be disorganized
  • Lack focus
  • Have a hard time paying attention to details and a tendency to make careless mistakes. Their work might be messy and seem careless.
  • Have trouble staying on topic while talking, not listening to others, and not following social rules
  • Be forgetful about daily activities (for example, missing appointments, forgetting to bring lunch)
  • Be easily distracted by things like trivial noises or events that are usually ignored by others.


It may vary with age. You might be able to notice it in preschoolersADHD symptoms nearly always show up before middle school.

Kids with hyperactivity may:

  • Fidget and squirm when seated.
  • Get up frequently to walk or run around.
  • Run or climb a lot when it’s not appropriate. (In teens this may seem like restlessness.)
  • Have trouble playing quietly or doing quiet hobbies
  • Always be “on the go”
  • Talk excessively

Toddlers and preschoolers with ADHD tend to be constantly in motion, jumping on furniture and having trouble participating in group activities that call for them to sit still. For instance, they may have a hard time listening to a story.

School-age children have similar habits, but you may notice those less often. They are unable to stay seated, squirm a lot, fidget, or talk a lot.

Hyperactivity can show up as feelings of restlessness in teens and adults. They may also have a hard time doing quiet activities where you sit still.


Symptoms of this include:

  • Impatience
  • Having a hard time waiting to talk or react
  • Have a hard time waiting for their turn.
  • Blurt out answers before someone finishes asking them a question.
  • Frequently interrupt or intrude on others. This often happens so much that it causes problems in social or work settings.
  • Start conversations at inappropriate times.

Impulsivity can lead to accidents, like knocking over objects or banging into people. Children with ADHD may also do risky things without stopping to think about the consequences. For instance, they may climb and put themselves in danger.

Many of these symptoms happen from time to time in all youngsters. But in children with the disorder they happen a lot — at home and school, or when visiting with friends. They also mess with the child’s ability to function like other children who are the same age or developmental level.

Getting Diagnosed

Doctors check for behavior that’s:

  • Not typical for the person’s age. (Most children can behave in those ways at some point or another, though.)
  • Has a negative impact on the person’s ability to function at home, in social environments, or at work.

External ADHD Symptoms and Effects

Attention Deficit Hyperactivity Disorder (ADHD) is basically CNS dysfunction (mainly the frontal cortex and the reticular formation of the brain), which is manifested difficulty sustaining attention and concentration, impaired learning and memory, excessive motor activity (hyperactivity) and incontinence (impulsivity). ADHD is common among younger students.

The main ADHD symptom is “violation of attention.” Attention deficits characteristic of all children with this syndrome, and hyperactivity is not always the case. ADHD is divided into two classes: attention deficit disorder and hyperactivity “and attention deficit disorder without hyperactivity.

What causes ADHD:

Imbalance and disruption of production of neurotransmitters (catecholamine, serotonin, etc.);

Lack of control and “quenching” behavior in septal hippocampus system (SHS);

Dysfunction of the frontal lobe of brain.

ADHD is associated with the formation of various substances (flavorings, food additives, excessive consumption of sugar, impaired glucose metabolism, food allergies, lack of magnesium and iron, high content of lead in the body, and others.) ADHD is determined by mutations in three genes that regulate dopamine metabolism.

There are several forms of ADHD with different symptoms:

Attention deficit disorder without hyperactivity – ADD;

Combined syndrome with hyperactivity;

Complicated form (with ADHD symptoms of neurotic variants of the combined version);

ADHD-H (genetic origin);

ADHD-0 (organic origin);

ADHD-OG (mixed origin);

ADHD-Cr (cryptogenic).

Emotional disturbances are common among ADHD symptoms. In emotional development goes, tend to lag behind that imbalance manifests, temper, intolerance to defeat.

Social and behavioral ADHD symptoms

Social and behavioral aspects of these children are important because of the spreading everywhere negative influence on their peers. In children, there are difficulties in relations with their not only peers but also adults. Interpersonal behavior of children with ADHD is often characterized by impulsiveness, excessiveness, persistence, disorganization, impressionability, aggression and emotion. Thus, these children violate social relationships, communication and cooperation.

Behavioral disorders along with ADHD symptoms are common, but not always; not all children with ADHD suffer from behavioral disorders. In children with ADHD more often bedwetting, they are worse than falling asleep and in the morning is often manifested drowsiness.

Studies have shown that impulsivity and hyperactivity in adolescence, many reduced even if there are other violations. People who suffered from a severe form of childhood ADHD in adolescence and adulthood cannot adapt socially.

ADHD (usually in combination with behavioral disorders) may indicate a variety of personality disorders. ADHD contributes to the development of alcoholism and drug addiction, which hide his symptoms and make it difficult to diagnose.

Common physiological ADHD symptoms

ADHD is caused by mild residual brain injury, which includes the presence of light diffuse neurological symptoms, impaired coordination, hyperactivity, moderately expressed sensors and motor system, speech disorders, behavioral disorders, increased distractibility, lack of skills, the specific difficulties of learning combined with a delay in the formation of language and speech.

ADHD symptoms are almost always appears to 7 years. Average age to see a doctor is 8-10 years, since it is at this age learning and household duties requires the child to independence, concentration and determination. Children at earlier age can be diagnosed with ADHD at first contact with the doctor usually does not give, and wait a few months, during which symptoms must persist.

More than half of children who have been diagnosed with ADHD in the primary grades, have kept this syndrome in adolescence, which is accompanied by a concomitant condition. These teens tend to use psychoactive drugs, struggling to adapt to the team. In 30-70% of cases, the symptoms of ADHD persist in adults.

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