ADHD: Symptoms, Types, Testing, and Treatment - WebMD
ADHD is the most commonly diagnosed mental disorder in children. Find out the symptoms in children and adults, types, causes, diagnosis, treatment, and outlook.

Attention-Deficit / Hyperactivity Disorder (ADHD) | CDC
About Read about ADHD, its types, symptoms, possible risk factors, screening, treatment, and CDC's work.

What Is ADHD? Meaning, Signs, Causes, And How To Cope
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.

Symptoms of ADHD | Attention-Deficit / Hyperactivity Disorder (ADHD) | CDC
Key points ADHD symptoms can present as mostly inattentive, mostly hyperactive-impulsive, or a combination of both types of symptoms. If you think your child might have ADHD, the first step is to talk with a healthcare provider.

Attention deficit hyperactivity disorder - Wikipedia
Attention deficit hyperactivity disorder (ADHD) [1] is a neurodevelopmental disorder characterised by symptoms of inattention, hyperactivity, impulsivity, and emotional dysregulation that are excessive and pervasive, impairing in multiple contexts, and developmentally inappropriate. [8] ADHD symptoms arise from executive dysfunction. [17]

Attention-deficit/hyperactivity disorder (ADHD) in children
Attention-deficit/hyperactivity disorder, also called ADHD, is a long-term condition that affects millions of children. It often continues into adulthood. ADHD includes a mix of ongoing problems. These can include having a hard time paying attention, being hyperactive and being impulsive.

Adult attention-deficit/hyperactivity disorder (ADHD)
Symptoms can range from mild to severe. Many adults with ADHD aren't aware they have it — they just know that everyday tasks can be a challenge. Adults with ADHD may find it difficult to focus and prioritize, leading to missed deadlines and forgotten meetings or social plans.

Attention-Deficit/Hyperactivity Disorder (ADHD) - NIMH
NIMH researches attention-deficit/hyperactivity disorder (ADHD). Find resources on the signs and symptoms of ADHD and potential treatments and therapies.

CHADD - Improving the lives of people affected by ADHD
Children and Adults with Attention-Deficit/Hyperactivity Disorder (CHADD) is the nation's leading nonprofit organization serving people affected by ADHD.

Attention-Deficit/Hyperactivity Disorder (ADHD) - Cleveland Clinic
ADHD (attention-deficit/hyperactivity disorder) is a type of brain difference that can make it hard to pay attention, finish tasks and sit still. Treatment can help.