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Response to methylphenidate in boys with attention-deficit hyperactivity disorder
1National Centre for Child and Adolescent Psychiatry at the University of Oslo, Norway.
Acta Paediatrica (Oslo, Norway : 1992)
|May 6, 1999
Summary
Methylphenidate significantly reduced hyperactivity and conduct problems in boys with attention-deficit hyperactivity disorder (ADHD). Most children showed improvement, with many achieving normal hyperactivity levels, validating stimulant trials for severe ADHD cases.
Area of Science:
- Child and Adolescent Psychiatry
- Neuroscience
- Pharmacology
Background:
- Attention-deficit hyperactivity disorder (ADHD) is a common neurodevelopmental disorder.
- Hyperactivity and conduct problems are core symptoms of ADHD.
- Methylphenidate is a commonly prescribed stimulant medication for ADHD.
Purpose of the Study:
- To evaluate the efficacy of methylphenidate in treating ADHD symptoms in boys.
- To identify predictors of treatment response.
- To inform clinical practice regarding stimulant use in ADHD.
Main Methods:
- Double-blind, placebo-controlled, crossover design.
- 36 boys aged 7-11 years with ADHD participated.
- Assessment included behavioral observations and neuropsychological tests.
Main Results:
- Methylphenidate significantly reduced hyperactivity and conduct problems.
- Improvements were observed in sustained attention, working memory, and motor steadiness.
- 83% of participants showed significant hyperactivity improvement; 60% normalized.
Conclusions:
- Methylphenidate is effective in reducing ADHD symptoms, including hyperactivity and conduct issues.
- Predictors like high hyperactivity and younger age were identified but had limited classification accuracy.
- Stimulant trials are indicated for ADHD children with significant home and school impairment.