About one in four children with autism hit, scratch or otherwise hurt themselves, suggests an analysis of school and medical records for more than 8,000 children in the United States. Children who engage in self-injury tend to have mood and behavioral challenges, as well as cognitive impairment.
In a second study, Soke and his colleagues investigated possible connections between self-injurious behaviors and a variety of other features — from a child’s sex and race to sleep problems and sensory sensitivities. The researchers also took note of family characteristics, such as age of parents, maternal education, insurance coverage and income.
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