- ADHD affects 2-5% of all children.
- ADHD was first described about 100 years ago but is no more prevalent now, just better recognized.
- Although up to 3x as many boys are diagnosed with ADHD as girls, it is now suspected the incidence is more like 1:1.
- Research suggests 50-80% of children with ADHD will continue to meet diagnostic criteria in adolescence and 50-70% will have symptoms causing impairment as adults.
- The incidence of ADHD is approximately the same across all countries and races.
- Most ADHD children have the social and emotional maturity of a child two thirds their age.
- The stimulants Ritalin and Dexamphetamine have been used for over 40 years. Between 80-90% of children with significant ADHD will be helped in the short term by one of the stimulants.
- Approximately half of the children who present with ADHD are also troubled by specific learning disabilities, eg dyslexia.
- Oppositional Defiant Disorder is a co-morbid condition found in 40-60% of children with ADHD.
Ref: Understanding ADHD by Dr Christopher Green and Dr Kit Chee, 2001
Fact Sheet: Attention Deficit Hyperactivity Disorder (ADHD) Topic, www.russellbarkley.org