Definition of Attention Deficit Disorder (ADD)

Reviewed on 11/10/2022

Attention deficit disorder (ADD) is an old term for primarily inattentive ADHD (attention deficit hyperactivity disorder). ADHD is a developmental disorder characterized by symptoms of inattention (such as distractibility, disorganization, or forgetfulness) or by symptoms of hyperactivity and impulsivity (such as fidgeting, speaking out of turn, or restlessness). It is also referred to as attention deficit-hyperactivity disorder (ADHD). ADHD is not caused by an underlying physical or mental disorder.

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ADHD Symptoms in Children See Slideshow
References
Jameson, J. Larry, et al. Harrison's Principles of Internal Medicine, 20th Ed. New York: McGraw-Hill Education, 2018.

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