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Hyperkinetic disorders in seven-year-old children with perceptual, motor and attentional deficits
Insights
Generalized hyperkinesis, or hyperactivity, affects 1-3% of children. This condition is more common in those with Minimal Brain Dysfunction and is influenced by genetic, environmental, and psychosocial factors.
Area of Science:
- Neuropsychiatry
- Child Psychology
Background:
- Minimal Brain Dysfunction (MBD) is a condition affecting children's development.
- Hyperactivity is a key symptom that requires careful assessment across multiple settings.
Purpose of the Study:
- To investigate the prevalence and characteristics of generalized hyperkinesis in a pediatric population.
- To explore the relationship between Minimal Brain Dysfunction and generalized hyperkinesis.
Main Methods:
- A study involving 141 seven-year-old Swedish children.
- Inclusion of children with pre-existing perceptual, motor, and attentional deficits, alongside a control group.
- Assessment of hyperactivity across three distinct settings to identify generalized hyperkinesis.
Main Results:
- Approximately one-third of children diagnosed with Minimal Brain Dysfunction exhibited generalized hyperkinesis.
- Generalized hyperkinesis was significantly rarer in children without perceptual-motor deficits.
- A probable population frequency of 1-3% for generalized hyperkinesis was estimated.
Conclusions:
- Generalized hyperkinesis is a distinct condition, often associated with Minimal Brain Dysfunction.
- The development of generalized hyperkinesis likely results from an interaction between genetic predispositions (delayed maturation), perinatal factors, and psychosocial influences.
Abstract:
One hundred and forty-one seven-year-old Swedish children took part in an extensive neuropsychiatric study involving total population samples of children who had shown perceptual, motor and attentional deficits in pre-school, and blindly examined comparison children. The present paper reports on generalized hyperkinesis, i.e. hyperactivity in the child in all of three different assessment settings. About a third of children diagnosed according to strict criteria as suffering from 'Minimal Brain Dysfunction' showed generalized hyperkinesis. In children without perceptual-motor deficits, hyperkinesis was very much rarer. A total population frequency for generalized hyperkinesis in the range of 1-3% is reported as probable. Heredity for delayed maturation, non-optimal pre-, peri- and neonatal factors and adverse psychosocial factors were found to interact in the shaping of the disorder.