In some people, the signs of ADHD seem obvious -- fidgeting constantly, difficulty paying attention in school or at work, and leaving tasks unfinished. For others, particularly those without behavior problems, ADHD may be more difficult to diagnose.
The symptoms of ADHD may mimic those of other conditions, and sometimes the signs are subtler and harder to distinguish. One psychiatrist, Daniel Amen, MD, believes that to get a truly accurate diagnosis of ADHD, it is necessary to look inside the...
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 and are not overly active or disruptive. 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 that are inappropriate for a person's age or developmental level
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.