Traumatic brain injury, or TBI, in children accounts for almost half a million visits to the ER each year.
A study in the journal Pediatrics' followed 40 children between the ages of 2 and 7 who suffered a severe brain injury. They found significant intellectual deficits some 10 years later.
Many also had dramatically decreased IQ scores.
That conflicts with conventional medical opinion that young brains can overcome even serious damage.
But another study found that children with milder injuries, such as a short fall, *did recover completely.