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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

JJ Pionke

Social Sciences, Health, and Education Library


JJ Pionke
Applied Health Sciences Librarian

Social Sciences, Health, and Education Library

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Social Sciences, Health, and Education Library
SSHEL (Room 101)
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Urbana, IL 61801
General Telephone: (217) 333-2305 Information Services Desk Telephone: (217) 244-1864

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