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University Library, University of Illinois at Urbana-Champaign

Attention Deficit Hyperactivity Disorder/Attention Deficit Disorder (ADHD/ADD): Home

This guide provides resources about ADHD.

What is ADHD?

Attention Deficit Hyperactivity Disorder spelled out in wooden blocks

Attention deficit hyperactivity disorder (ADHD) is a chronic developmental disorder characterized by attention problems, including distractibility, hyperactivity, impulsive behaviors, and the inability to remain focused on tasks or activities. Among its acronyms are AD/HD and ADD. Diagnosed in childhood, the disorder can continue into adulthood. (Gale Encyclopedia of Mental Health, 3rd edition)




DSM-V Classification:

  • Combined Presentation 314.01
  • Predominately inattentive presentation 314.00
  • Predominately hyperactive/impulsive presentation 314.01

ICD-10 Classification:

  • Combined Presentation F90.2
  • Predominately inattentive presentation F90.0
  • Predominately hyperactive/impulsive presentation F.90.1

Who is affected by ADHD?

According to the Diagnostic and statistical manual of mental disorders,

  • ADHD occurs in most cultures in about 5% of children and about 2.5% of adults.
  • ADHD is more frequent in males, with a ratio of approximately 2:1 in children and 1.6:1 in adults

Subject Guide

JJ Pionke (SSHEL)'s picture
JJ Pionke (SSHEL)

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