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This is definitely not the case, and we hope that this work will contribute to a better understanding of the disorder." While the study included large numbers of people of all ages, its design means that it cannot determine how ADHD develops throughout life.Therefore, longitudinal studies tracking people with ADHD from childhood to adulthood to see how brain differences change over time will be an important next step in the research.At the time of their MRI scan, 455 people with ADHD were receiving psychostimulant medication, and looking back further, 637 had had the medication in their lifetime.The different volumes of the five brain regions involved in ADHD were present whether or not people had taken medication, suggesting the differences in brain volumes are not a result of psychostimulants.Based on this, the researchers propose that ADHD is a disorder of the brain, and suggest that delays in the development of several brain regions are characteristic of ADHD.
Although the exact prevalence in adults is unknown, epidemiologic studies thus far reveal that the condition, marked by inattentiveness, difficulty getting work done, procrastination, or organization problems, probably exists in about 2-4% of adults.
Other symptoms observed in adults include inattention, impulsivity, and restlessness as well as frequently accompanying behavioral, learning, and emotional problems.
Adults with hyperactive-impulsive symptoms feel restless and constantly "on the go" as they try to do multiple tasks at once.
The findings from this study could help improve understanding of ADHD, and might be important in challenging beliefs that this disesase is a label for difficult children or the result of poor parenting. The findings from this study could help improve understanding of ADHD, and might be important in challenging beliefs that this disesase is a label for difficult children or the result of poor parenting.
The study is the largest to look at the brain volumes of people with ADHD, involving more than 3,200 people.The findings bring scientists a step closer to developing new -- and potentially better -- ...