Attention deficit hyperactivity disorder (ADHD) is a common condition that affects children and adolescents and can continue into adulthood for some.
The National Institute of Mental Health (NIMH) estimates that 3% to 5% of children have ADHD. Some experts, though, say ADHD may occurs in 8% to 10% of school-aged children. Some experts also question whether kids really outgrow ADHD. What that means is that this disorder may be more common in adults than previously thought.
Children with ADHD...
ADHD, Predominantly Hyperactive-Impulsive Type: A subtype of ADHD in which people show both hyperactive and impulsive behavior, but may not show enough symptoms of inattention to qualify for Combined Type.
ADHD, Predominantly Inattentive Type: People with this type of ADHD show significant symptoms of inattention but not hyperactive or impulsive behavior. This type of ADHD was formerly known as attention deficit disorder (ADD).
Attention Deficit Hyperactivity Disorder (ADHD): A developmental and behavioral disorder that is characterized by levels of inattention, distractibility, hyperactivity, and impulsivity. Typically symptoms are inappropriate for a person's age or developmental level and cause problems in everyday life.
Attention Deficit Disorder (ADD): A label with the same meaning as ADHD. At one time, ADD referred to a disorder involving difficulty paying attention or focusing attention without hyperactivity.
Bipolar disorder: Mental condition that is marked by mood swings between periods of intense emotional highs and lows
Clinical trial: Also called a research study; a research program involving patients with a particular condition usually to test various treatments for that condition
Neural: Related to the nervous system.
Neurotransmitter: A chemical in the brain that acts as a messenger to help transmit nerve impulses between brain cells.
Psychostimulants or Stimulants: Medicines that help people with ADHD to focus their thoughts and ignore distractions. These include Adderall (amphetamine dextroamphetamine mixed salts), Concerta (methylphenidate extended-release), Daytrana (methylphenidate extended-release), Focalin (dexmethylphenidate), Ritalin (methylphenidate), Quillivant XR (methylphenidate extended-release), and Vyvanse (lisdexamphetamine).