ADHD in Children: How to Recognize Symptoms Early

October 2, 2025, 5:04 am | Read time: 5 minutes

It’s a moment that often shakes parents to their core: Their own child–so full of energy, so creative–constantly gets into conflicts. At school, it’s called attention disorders and impulsivity. At home, there are frequent clashes–tantrums, arguments, tears. Parents feel helpless, overwhelmed, sometimes guilty. ADHD is one of the most common mental disorders in childhood. About five percent of children in Germany are affected. Early diagnosis and individually tailored therapy are crucial to improving the quality of life for affected children and families. FITBOOK editor Julia Freiberger explains how to recognize ADHD in children and what treatment options are available.

ADHD often pushes families to their limits. Daily life becomes a balancing act between love and frustration, patience and despair. It’s not the parents’ fault–and certainly not the child’s. ADHD is a real challenge, but also an opportunity to grow together.

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What is ADHD?

Attention Deficit Hyperactivity Disorder (commonly known as ADHD) is understood as a neurologically based disorder. It is characterized by persistent patterns of inattention, hyperactivity, and impulsivity. These behaviors exceed what is typical for the child’s age and developmental stage and can lead to significant impairments in social, academic, and family areas. Symptoms usually appear before the age of twelve and must persist for at least six months to justify the diagnosis.

ADHD is divided into three main types:

Predominantly inattentive type (ADD): Children mainly show inattention, are easily distracted, and have difficulty organizing tasks.

Predominantly hyperactive-impulsive type: Children are mostly hyperactive and impulsive, but show less inattention.

Combined type: A mix of inattention, hyperactivity, and impulsivity.¹

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Causes of the Disorder

The exact causes of ADHD have not yet been fully clarified. However, it is believed that a combination of genetic, neurobiological, and psychosocial factors plays a role in its development.

Neurobiological Factors

Research shows that the transport of the neurotransmitter dopamine in the brain is altered in ADHD–especially in areas important for memory and learning functions.

Psychosocial Factors

Influences such as an unstable family situation, parents’ mental illnesses, financial problems in the family, inconsistent parenting, or frequent criticism can increase the risk of developing ADHD.

Genetic Factors

ADHD often occurs in families, indicating a genetic predisposition.

Other Risk Factors

Smoking, alcohol consumption, or drug use by the mother during pregnancy, premature birth, low birth weight, and oxygen deprivation at birth can also increase the risk of ADHD.²

ADHD Symptoms in Children

Inattention, impulsivity, and hyperactivity are normal traits that every child exhibits at times. However, in ADHD, these are so pronounced that they significantly disrupt daily life.

Inattention:

Children often don’t listen in school, are easily distracted, make many careless mistakes, lose things, or forget tasks.
Even in leisure activities, they find it difficult to stick to one thing.

Impulsivity:

Children can’t wait, push ahead, interrupt conversations, blurt out answers, and often act without thinking.

Hyperactivity:

They constantly fidget, squirm in their seats, can hardly be quiet, frequently run around, or climb on furniture.
In situations with many stimuli, such as family gatherings, the symptoms often intensify.³

The severity can vary–some children are primarily inattentive (“daydreamers”), while others are more impulsive and hyperactive.⁴

How ADHD Progresses in Children

ADHD usually begins in childhood. In younger children, physical restlessness often predominates. As they age, the picture changes:

Teenagers show less obvious hyperactivity but often seem internally driven.
In adulthood, difficulties with attention, organization, and impulse control often persist.
About 50 to 80 percent of those affected continue to have ADHD symptoms as adults, with about 15 percent still meeting all criteria.

Important: ADHD is not a “childhood illness” that simply disappears–the symptoms change but often persist to some extent throughout life.

Consequences of ADHD

If ADHD remains untreated, it can have serious consequences:

In school: Concentration problems often lead to learning difficulties, poor grades, and in the worst case, dropping out.
In social life: It also frequently leads to conflicts with peers, exclusion, and thus difficulties in forming friendships.
For health: Children with ADHD also have an increased risk of accidents and injuries.
Regarding mental health: Those affected are more likely to develop anxiety, depression, tics, or oppositional behavior.
Later in life: Teenagers with ADHD are more likely to use addictive substances like nicotine, alcohol, and drugs. They often come into conflict with the law and have difficulties completing education, finding a job, or maintaining stable relationships.⁵

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Diagnosis of ADHD in Children

The diagnosis of ADHD requires careful evaluation by specialists in child and adolescent psychiatry.
Important: There is no simple test–the diagnosis is based on an overall picture from:

Medical History

Conversations with parents and child about behavior, development, and stressors.

Observations

Assessments from teachers and caregivers about behavior in school and leisure activities.

Standardized Questionnaires

Recording of symptoms and their severity.

Exclusion of Other Causes

Evaluation of vision or hearing problems, thyroid disorders, or other mental disorders.

An ADHD diagnosis is made when symptoms persist for at least six months, occur in multiple areas of life, and significantly impair the child’s development.

Treatment of the Disorder

The treatment of ADHD is individualized and based on several components:

Behavioral Therapy: Training in self-control, attention, and social skills.
Parent Training: Support in dealing with behavioral problems, promoting positive parenting strategies.
Psychoeducation: Educating the child, parents, and environment about ADHD and how to manage it.
School Support: Individual learning plans, compensatory measures, and close collaboration with teachers.
Medication Therapy: Medications like methylphenidate can help reduce symptoms. Careful medical supervision is important.

The earlier ADHD is recognized and treated, the better the chances of avoiding long-term burdens for the child and their family.⁶

This article is a machine translation of the original German version of FITBOOK and has been reviewed for accuracy and quality by a native speaker. For feedback, please contact us at info@fitbook.de.