Attention-Deficit Hyperactivity Disorder (ADHD)

Written by

Published May 07, 2021

Clinically reviewed by

Reviewed Jun 01, 2021

Overview

  • ADHD is one of the most common neurodevelopmental disorders — affecting 8.4% of children and 2.5% of adults — and is more common in males than females.
  • It is characterized by three core features: inattention, hyperactivity, and impulsive behavior. It is a medical condition, not a character flaw or the result of poor parenting.
  • There are three types: Inattentive, Hyperactive/Impulsive, and Combination. Symptoms vary by age and presentation — quieter cases are common and may go undetected.
  • Genetics is the primary known cause. Other contributing factors include brain injury, prenatal exposure to tobacco or alcohol, premature birth, and low birth weight.
  • Diagnosis requires symptoms to be present by age 12, significant, long-lasting, and functionally impairing. It cannot be self-diagnosed — a formal evaluation by a licensed professional is required.
  • ADHD is highly manageable. Treatment typically combines medication, behavioral therapy, and lifestyle modifications — and is generally quite successful, though finding the right plan may take time.

Symptoms of ADHD

ADHD symptoms differ by age, temperament, and any co-occurring conditions. Not all presentations are outwardly obvious — quieter cases involving moodiness or difficulty concentrating are just as real and deserve proper treatment.

In Adults

  • Hyperactivity: Restlessness, leg tapping, pacing, frequent interrupting, excessive talking, or always being “on the move.”
  • Inattention at work: Trouble organizing tasks, meeting deadlines, listening in meetings, or keeping appointments. May appear moody or tense due to impulsivity.
  • Home management difficulties: Putting off appointments, inattention to chores, disorganized living spaces, and communication challenges.
  • Task completion: Trouble starting, concentrating during, planning, and completing tasks.

In Children

  • Hyperactivity: Unable to sit still, bouncing around, climbing on furniture, squirming and fidgeting.
  • School-related issues: Calling out, interrupting, trouble completing schoolwork, disorganized belongings, moodiness, and impulsivity.
  • Task completion: Difficulty sitting still for meals, getting ready for outings, completing chores, and participating calmly in leisure activities.

Types of ADHD

  • Inattentive and Distractible: Difficulty concentrating, staying on task, and avoiding mental drift. May struggle to complete work and stay organized. Not a sign of low intelligence or stubbornness.
  • Hyperactive/Impulsive: Inability to sit still; need to pace, fidget, or tap. High impulsivity can lead to disruptive behavior and relationship problems. In adults, this type may appear as constant busyness or excessive talking.
  • Combination: Meets criteria for both inattentive and hyperactive/impulsive types. Most common ADHD presentation.

Causes of ADHD

Genetics is the primary driver of ADHD — twin studies have established a clear genetic link. ADHD is not caused by poor parenting, screen time, sugar, or poverty, though these can worsen symptoms. Other contributing factors include:

  • History of brain injury
  • Prenatal or early childhood exposure to environmental hazards such as lead
  • Use of tobacco or alcohol during pregnancy
  • Premature birth or low birth weight

Treatment for ADHD

ADHD is highly manageable. Most people benefit from a combination of approaches, and the right plan may take some trial and error to find.

1. Behavioral Therapy

Combines counseling with behavioral modification strategies to help recognize patterns, manage emotions, and make more mindful decisions. For children: sharing, turn-taking, and interacting with others. For adults: structuring schedules and building productive routines.

2. Cognitive-Behavioral Therapy (CBT)

Teaches people to recognize thoughts and pause before acting on them — especially useful for impulsivity. Also helps with concentration and focus. Therapists often incorporate mindfulness and meditation techniques.

3. Family and Marriage Therapy

Addresses the relationship and communication challenges that commonly arise from ADHD, for both families and partners.

4. Medication

  • Stimulants (e.g., methylphenidate, amphetamine): Most commonly prescribed. Balance neurotransmitter levels. Side effects can include sleep issues, reduced appetite, headaches, and irritability.
  • Non-stimulants (e.g., atomoxetine, bupropion): Slower-acting but preferred by those who can’t tolerate stimulant side effects.

5. Alternative Treatments

Natural treatments may provide supplemental support. Always consult a healthcare provider before starting any natural supplements.

6. Lifestyle Modifications

  • Visible daily task lists (with pictures/labels for younger children)
  • Sticky notes and device reminders for recurring tasks
  • Consistent daily routines that signal what comes next
  • Personalized organization systems at home and work

For parents: collaborate with teachers and counselors, model and reward good behavior, teach emotional regulation (“cool down”) techniques, and connect with ADHD support groups.

Types of ADHD

There are 3 types or categories of ADHD that people commonly fall into. Regardless of which one it is, almost all people with ADHD will struggle with at least some degree of distractibility, focus, and inattention issues that negatively impact their daily lives, whether it is professionally, personally, or school-related. That said, each of the 3 types of ADHD has its own characteristics.

Many with people with ADHD may exhibit signs of hyperactivity and impulsivity. Symptoms impulsive or hyperactive ADHD can include an ability to sit still, a need to pace, fidget, or tap. This is often first noticed in situations where these behaviors are not considered inappropriate, such as during school. Adults can experience hyperactivity as well; this may look like someone who is always “on the go” or who is extremely talkative.

Some people with ADHD also deal with high degrees of impulsive behavior. They don’t always have the ability to think things through before making a decision. Sometimes, they may be disruptive and appear rude. This can lead to relationship problems, communication issues, as well as potential harm or injury to themselves or others.

Impulsive/Hyperactive Type ADHD

Distractive or inattentive ADHD is when someone has trouble concentrating, has trouble staying on task, and finds that when they are trying to focus, their mind easily fixates on other unrelated topics. It may be difficult to complete work and stay organized. It’s important to understand that a person with ADHD doesn’t lack intelligence, and they aren’t inattentive out of spite or to be rebellious.

Inattentive and Distractible Type ADHD

Doctors will diagnose people with combination type ADHD if they meet the criteria for both the inattentive and hyperactive types of ADHD. Combined ADHD symptoms include both inattention and hyperactivity. People with ADHD combined type may be unable to sit still without fidgeting and they’re generally very easily distracted.

Combination Type ADHD

Sources

  1. What is ADHD?
    Centers for Disease Control and Prevention. https://www.cdc.gov/ncbddd/adhd/facts.html/ Updated January 2021.
  2. What is ADHD: Symptoms & Diagnosis
    American Psychiatric Association. https://www.psychiatry.org/patients-families/adhd/what-is-adhd/ Reviewed July 2017.
  3. Attention-Deficit/Hyperactivity Disorder.
    National Institute of Mental Health. https://www.nimh.nih.gov/health/topics/attention-deficit-hyperactivity-disorder-adhd/index.shtml/ Reviewed September 2019.
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What are the common signs of ADHD?

The most recognizable signs are difficulty paying attention, hyperactivity, and impulsive behavior — but presentations vary widely. In children, look for an inability to sit still, frequent interrupting, trouble completing schoolwork, and disorganized belongings. In adults, signs include poor time management, missed deadlines, difficulty starting or finishing tasks, restlessness, and appearing moody or tense. Quieter presentations — such as difficulty concentrating without outward hyperactivity — are just as common, particularly in females, and often go unrecognized.

How do you get diagnosed with ADHD?

A formal diagnosis involves a structured evaluation that includes a medical exam to rule out other health issues (such as hearing or vision problems), a standardized symptom checklist, a full history of symptoms, and input from teachers, family members, or others involved in the person’s care. For a diagnosis to be made, symptoms must be significant, long-lasting, functionally impairing, and — for teens and adults — traceable back to before age 12.

Who can diagnose ADHD?

ADHD is diagnosed by licensed medical and mental health professionals, including physicians, psychiatrists, psychologists, and behavioral therapists. For children, school staff such as teachers and school psychologists can help identify early signs and develop behavioral support plans, but they cannot make a formal diagnosis — they can refer families to qualified specialists.

Can an online therapist diagnose ADHD?

Yes. Licensed mental health professionals practicing via telehealth can conduct evaluations and diagnose ADHD. Online therapy and online psychiatry are also practical options for ongoing treatment, allowing people to manage their ADHD from home. Both in-person and online ADHD treatment have been shown to be effective.

What type of therapy is best for ADHD?

There is no single best therapy — most people benefit from a combination. Behavioral therapy is widely used for both children and adults, targeting patterns, emotional regulation, and practical skills. CBT is particularly effective for managing impulsivity and improving focus. Family or marriage therapy helps address the relationship and communication impact of ADHD. The right approach depends on age, symptom profile, and individual needs.

When should you seek professional help for ADHD?

Seek professional help when symptoms of inattention, hyperactivity, or impulsivity are consistently interfering with work, school, relationships, or daily functioning. For children, a good time to seek evaluation is when teachers or school staff raise concerns, or when behavioral or academic challenges become persistent. For adults, if longstanding struggles with focus, organization, or impulse control are affecting your quality of life, a professional evaluation is worth pursuing. Early intervention leads to better outcomes.

Can ADHD be treated?

Yes. ADHD is highly treatable, though there is no cure. Most people respond well to a combination of medication, therapy, and lifestyle modifications. The right plan is individualized and may require some adjustment over time, but effective treatment is available and works. Both in-person and online treatment options exist.

How prevalent is ADHD?

ADHD affects 8.4% of children and 2.5% of adults, making it one of the most common neurodevelopmental disorders. It is more prevalent in males than females. Most symptoms in children appear between ages 3 and 6, though many people are not diagnosed until later in childhood or adulthood.

Can you cure ADHD?

There is no cure for ADHD, but it is highly manageable. Effective treatment — typically a combination of medication, behavioral counseling, psychological support, education, and skills development — can significantly reduce the impact of symptoms on daily life. Finding the right combination may take some trial and error, and needs often shift over time.

What types of therapy are used to treat ADHD?

The three main therapy approaches are behavioral therapy (targets behavior patterns and emotional regulation), CBT (focuses on thought patterns, impulsivity, and mindfulness), and family or marriage therapy (addresses the relational impact of ADHD). These are often combined and tailored to the person’s age, symptoms, and circumstances.

What types of medications are used to treat ADHD?

Stimulants — containing methylphenidate or amphetamine — are the most commonly prescribed and work by balancing neurotransmitter levels. Non-stimulants such as atomoxetine and bupropion are slower-acting alternatives preferred by those who can’t tolerate stimulant side effects (which can include insomnia, reduced appetite, headaches, and irritability). A psychiatrist can help identify the best option.

What are some ADHD lifestyle modifications?

Practical adjustments that help include: keeping a visible daily task list, using sticky notes or device reminders, establishing consistent daily routines, and building personalized organization systems at home and at work. For parents, collaborating with teachers and counselors, modeling and rewarding good behavior, teaching emotional regulation techniques, and joining ADHD support groups can all make a meaningful difference.

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