title: Hyperkinetic disorders in seven-year-old children with perceptual, motor and attentional deficits.
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.
mesh_terms: D001288:Attention; D001289:Attention Deficit Disorder with Hyperactivity / Q000150:complications / Q000209:etiology / Q000523:psychology*; D002648:Child; D005190:Family; D005260:Female; D006801:Humans; D008137:Longitudinal Studies; D008297:Male; D009048:Motor Skills; D010468:Perceptual Disorders / Q000150:complications; D011247:Pregnancy; D011248:Pregnancy Complications; D012737:Sex Factors