attention-deficit/hyperactivity disorder: Quick Facts

Written and fact-checked by

The Information Architects of Encyclopaedia Britannica

Last updated

Nov. 7, 2026

News •

Psychosis linked to ADHD medication on the rise, doctors warn • Nov. 1, 2026, 3:00 AM ET (Sydney Morning Herald)

Olympian Chloe Kim opens up about her ADHD diagnosis • Oct. 29, 2026, 3:00 AM ET (NBC)

Diabetes and ADHD drugs to be tested on Alzheimer's patients in new study • Oct. 21, 2026, 7:02 PM ET (BBC)

UCL study reveals broad mortality risks faced by ADHD individuals • Oct. 19, 2026, 2:10 PM ET (News-Medical)

Facts

Also Known As	ADD • attention deficit disorder • ADHD

Photos and Videos

Labeled anatomical diagram of the human brain in sagittal section, medial view, showing internal structures such as the corpus callosum, cerebellum, ventricles, brainstem, and other key regions.

The science behind Adderall

See All Videos and Images →

Topics

minimal brain dysfunction attention hyperactivity Strattera neurodiversity Study finds ADHD content on TikTok is less than 50 percent accurate Adderall bupropion dextroamphetamine attention disorder

44 Questions from Britannica’s Most Popular Health and Medicine Quizzes

full human skeleton

Diseases, Disorders, and More: A Medical Quiz