What is ADHD? 7 Things You Need to Know

Discover 7 key facts about ADHD, from neurodevelopmental roots to effective treatments. Understand its impact across the lifespan and learn how to manage symptoms.

What is ADHD? 7 Things You Need to Know

Glice Martineau

What is ADHD? 7 Things You Need to Know

Attention deficit hyperactivity disorder (ADHD) is more than just distraction or hyperactivity. It's a complex neurodevelopmental disorder affecting millions of adults worldwide. 

According to recent estimates, 366 million adults worldwide are affected by ADHD.

It impacts focus, impulse control, and organization skills throughout life.

This article explores 7 things you need to know about ADHD, its impact on students' learning, daily life, and effective treatment options.

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1. Understanding ADHD: More Than Just "Lack of Focus"

ADHD is considered a disorder that affects executive function, impacting attention, impulse control, and organizational skills. Many people with ADHD often struggle with time management and difficulty sitting still.

The Neurodevelopmental Nature of ADHD

ADHD originates from differences in parts of the brain responsible for attention and impulse control. Studies suggest that genes play a significant role in its development.

Beyond Attention: Executive Function Challenges

While inattention is prominent, ADHD also affects various aspects of executive function.

Individuals diagnosed with ADHD may have trouble with working memory, cognitive flexibility, and emotional regulation.

2. Types of ADHD: Not a One-Size-Fits-All Disorder

The DSM-5 outlines three forms of ADHD:

a. Predominantly Inattentive Type

This form of ADHD is characterized by difficulty maintaining focus, high distractibility, and frequent forgetfulness.

People with this type may appear disorganized, have trouble following instructions, and often lose important items.

b. Predominantly Hyperactive-Impulsive Type

Individuals with this type exhibit excessive physical restlessness, difficulty sitting still, and a tendency to act without thinking.

They may talk excessively, interrupt others frequently, and struggle with patience in different situations.

c. Combined Type

The most common form of ADHD, the combined type, presents a mix of inattentive and hyperactive-impulsive symptoms.

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People with this type experience challenges with focus and organization while also displaying restlessness and impulsive behaviors.

3. ADHD and Comorbidities: Understanding the Bigger Picture

Attention deficit hyperactivity disorder rarely exists in isolation. Many individuals with ADHD experience a range of co-occurring conditions that can complicate their diagnosis and treatment.

Learning disorders, such as dyslexia, dyscalculia, and dysgraphia, are common companions, affecting 15-45% of those with ADHD.

These can significantly impact academic performance and require specialized educational interventions.

Anxiety disorders, including generalized anxiety and social anxiety, are present in up to 30% of Attention deficit hyperactivity disorder cases.

Similarly, mood disorders like depression and bipolar disorder affect up to 20% of individuals with ADHD. 

These emotional challenges can intensify ADHD symptoms and require careful management.

In children, Oppositional Defiant Disorder (ODD) is particularly prevalent, occurring in about 40% of ADHD cases. ODD manifests as a persistent pattern of anger and defiance, adding another layer of complexity to behavior management.

4. ADHD Across the Lifespan: From Childhood to Adulthood

ADHD often persists from childhood into adulthood, though its manifestation changes over time.

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Evolving Symptoms and Challenges

Children with ADHD may seem to be "bouncing off the walls," while adults with Attention Deficit Hyperactivity Disorder often internalize hyperactivity as restlessness. 

In adolescence, symptoms may shift, with decreased visible hyperactivity but increased struggles with inattention and impulsivity.

Adults diagnosed with ADHD often face challenges in time management, organization, and maintaining relationships.

Facts About ADHD Persistence

Although ADHD symptoms may change, core issues often persist into adulthood.

Research shows that about 60-70% of children diagnosed with ADHD continue to meet diagnostic criteria as adults.

However, many adults develop coping strategies over time, which can mask symptoms and lead to underdiagnosis in the adult population.

5. Genetic and Environmental Factors Behind ADHD

ADHD stems from a complex interplay of genetic and environmental influences. 

The Role of Genetics

Having a parent or sibling with ADHD increases one's chances of developing the disorder. Twin studies have shown high concordance rates, further supporting the strong genetic component of Attention Deficit Hyperactivity Disorder.

Environmental Influences

Factors such as prenatal exposures and childhood adversity may trigger or worsen ADHD symptoms in genetically susceptible individuals. Other potential environmental risk factors include low birth weight, early childhood lead exposure, and certain nutritional deficiencies.

It's important to note that these factors don't cause ADHD on their own but interact with genetic predisposition.

6. Diagnosis and Assessment: A Comprehensive Approach

Accurate ADHD diagnosis requires a thorough evaluation process.

Diagnostic Criteria

According to the Centers for Disease Control, symptoms must be present for at least six months and interfere with functioning in multiple settings.

The Importance of Professional Assessment

A mental health professional is crucial for accurate diagnosis and treatment planning. The diagnosis of ADHD can feel overwhelming, but it's the first step towards effective management.

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7. Treatment Options: A Multimodal Approach

Effective treatment for ADHD often involves a combination of strategies. This multimodal approach addresses various aspects of the disorder and its impact on daily life.

Medication Management

ADHD medications can help manage the core symptoms of ADHD. These may include stimulants like methylphenidate or amphetamines, as well as non-stimulant options. Regular follow-ups with healthcare providers are essential for optimal results.

Behavioral Interventions

Behavioral therapy and working with an ADHD coach can provide valuable support. Cognitive Behavioral Therapy (CBT) can help develop coping strategies, while social skills training can improve interpersonal interactions.

For children, parent training programs can be particularly beneficial.

Educational and Workplace Accommodations

Tailored strategies may help students with ADHD perform well in school and adults with ADHD succeed in the workplace. These might include extended time for tests, quiet work areas, breaking tasks into smaller steps, or using organizational tools.

In the workplace, flexible hours or regular check-ins with supervisors can be helpful.


In conclusion, Attention Deficit Hyperactivity Disorder is a complex disorder that affects children and adults. Many adults may have ADHD without realizing it, as adult ADHD is often diagnosed later in life.

Understanding the condition and seeking proper diagnosis and treatment can significantly improve the quality of life for those affected by ADHD.

ADHD awareness is growing, and research from institutions like Harvard Medical School continues to advance our understanding.

While ADHD can feel overwhelming, it's important to remember that with proper support and treatment, many children and adults with ADHD lead successful, fulfilling lives.

Remember, if you think you or someone you know may have ADHD, consult a behavioral health or mental health professional for proper evaluation and care. 

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