https://www.psychiatry.org/patients-families/adhd/what-is-adhd
Learn about ADHD including symptoms, risk factors, treatment options and answers to your questions.

https://www.apa.org/topics/adhd/
ADHD, or attention-deficit/hyperactivity disorder, makes it difficult to get organized, stay focused, make realistic plans, or think before acting. Treatment options

https://www.nimh.nih.gov/health/topics/attention-deficit-hyperactivity-disorder-adhd
Learn about attention-deficit/hyperactivity disorder, including signs and symptoms, risk factors, treatments, and tips for staying organized with ADHD.

https://www.mayoclinic.org/diseases-conditions/adhd/symptoms-causes/syc-20350889
ADHD includes a combination of persistent problems, such as difficulty sustaining attention, hyperactivity and impulsive behavior. Children with ADHD may also struggle with low self-esteem, troubled relationships and poor performance in school. Symptoms sometimes lessen with age. However, some people never completely outgrow their ADHD symptoms.

https://www.webmd.com/add-adhd/attention-deficit-hyperactivity-disorder-adhd
ADHD is the most commonly diagnosed mental disorder in children. Find out the symptoms in children and adults, types, causes, diagnosis, treatment, and outlook.

https://www.cdc.gov/adhd/about/index.html
Read about ADHD, its types, symptoms, causes, screening, treatment, and CDC's work.

https://en.wikipedia.org/wiki/Attention_deficit_hyperactivity_disorder
0.8-1.5% (2019, using DSM-IV-TR and ICD-10) [2] Attention deficit hyperactivity disorder ( ADHD) is a neurodevelopmental disorder characterized by executive dysfunction occasioning symptoms of inattention, hyperactivity, impulsivity and emotional dysregulation that are excessive and pervasive, impairing in multiple contexts, and otherwise age

https://www.healthline.com/health/adhd
If you live with ADHD, you know that it's a complex condition. Learn about causes and testing, natural remedies, and tips for coping.

https://www.understood.org/en/articles/what-is-adhd
What is ADHD? Use this ADHD guide to understand attention-deficit hyperactivity disorder and how people with ADHD (or ADD) can thrive.

https://psychcentral.com/adhd/adhd-overview
What is ADHD? ADHD is a common neurodevelopmental disorder that affects how you behave. Symptoms often include ongoing, persistent patterns of inattention, an inability to focus, hyperactivity, or

https://www.nimh.nih.gov/health/publications/attention-deficit-hyperactivity-disorder-in-children-and-teens-what-you-need-to-know
What is ADHD? ADHD is a developmental disorder associated with an ongoing pattern of inattention, hyperactivity, and/or impulsivity. Symptoms of ADHD can interfere with daily activities and relationships. ADHD begins in childhood and can continue into the teen years and adulthood.

https://www.healthdirect.gov.au/attention-deficit-disorder-add-or-adhd
What is ADHD? Attention deficit hyperactivity disorder (ADHD) is a developmental disorder that begins in early childhood. ADHD used to be called attention deficit disorder (ADD).

https://www.simplypsychology.org/adhd.html
ADHD, or Attention Deficit Hyperactivity Disorder, is a neurodevelopmental disorder that affects both children and adults. It is characterized by signs such as difficulty with focus, hyperactivity, and impulsivity.

https://www.nhs.uk/conditions/attention-deficit-hyperactivity-disorder-adhd/
Attention deficit hyperactivity disorder (ADHD) is a condition that affects people's behaviour. People with ADHD can seem restless, may have trouble concentrating and may act on impulse. Symptoms of ADHD tend to be noticed at an early age and may become more noticeable when a child's circumstances change, such as when they start school.

https://www.ninds.nih.gov/health-information/disorders/attention-deficit-hyperactivity-disorder
Attention deficit hyperactivity disorder (ADHD) is a neurobehavioral disorder marked by trouble controlling impulsive behavior, difficulty paying attention, or overactivity. It is one of the most common neurodevelopmental disorders of childhood. ADHD interferes with a person's ability to stay on a task and maintain focus.

https://add.org/adhd-facts/
What is ADHD? Attention deficit hyperactivity disorder (ADHD) is a neurodevelopmental disorder. It is one of the most common disorders of this kind diagnosed in children. ADHD often carries over into adulthood.

https://www.hopkinsmedicine.org/health/conditions-and-diseases/adhdadd
It's also called attention deficit disorder. It's often first diagnosed in childhood. There are 3 types: ADHD, combined. This is the most common type. A child with this type is impulsive and hyperactive. They also have trouble paying attention and are easily distracted. ADHD, impulsive/hyperactive. This is the least common type of ADHD.

https://www.verywellhealth.com/adhd-attention-deficit-hyperactivity-disorder-included-definition-symptoms-traits-causes-treatment-5084784
Learn about the symptoms, diagnosis, and treatment of attention deficit hyperactivity disorder; find out about new studies on ADHD drugs.

https://www.nimh.nih.gov/health/publications/adhd-what-you-need-to-know
What is ADHD? ADHD is a developmental disorder associated with an ongoing pattern of inattention, hyperactivity, and/or impulsivity. The symptoms of ADHD can interfere significantly with an individual's daily activities and relationships. ADHD begins in childhood and can continue into the teen years and adulthood.

https://my.clevelandclinic.org/health/diseases/4784-attention-deficithyperactivity-disorder-adhd
Attention-deficit/hyperactivity disorder (ADHD) is one of the most common childhood neurodevelopmental disorders. Learn what to look for.

https://www.mayoclinic.org/diseases-conditions/adult-adhd/symptoms-causes/syc-20350878
This mental health disorder includes a combination of persistent problems, such as difficulty paying attention, hyperactivity and impulsive behavior.

https://www.cdc.gov/adhd/index.html
Find information on symptoms, diagnosis, treatment, data, research, and free resources.