How Common Is Traumatic Brain Injury in Children? A Look at the U.S. Numbers

If your child has had a concussion or a more serious blow to the head, one of the first questions you are likely to ask is how often this happens to other children. The answer is that pediatric traumatic brain injury (TBI) is far more common than most parents realize, and the great majority of these injuries are the type doctors classify as “mild.”

The big-picture numbers

Traumatic brain injury is one of the most common injuries in the United States. An estimated 2.8 million people of all ages sustain a TBI each year, and most of these are mild TBIs, commonly called concussions. Children are affected at strikingly high rates: among all age groups, the highest rates of mild TBI are seen in adults over 75, children younger than 5 (about 1,592 emergency department visits per 100,000), and adolescents and young adults aged 15 to 24 (about 1,081 per 100,000).

Sports and recreation are a leading cause

For school-aged children, sports and recreation are a major source of head injuries. Between 2010 and 2016, an average of roughly 283,000 children under 18 were seen in emergency departments each year for a sports- or recreation-related TBI. Contact sports accounted for about 45 percent of those visits, with football, bicycling, basketball, playground activity, and soccer contributing the largest numbers. In national surveys, nearly 12 percent of high school students reported having at least one sports- or recreation-related concussion in the previous year.

“Mild” does not always mean minor

It is important to understand what “mild” means clinically. A mild TBI is defined by a brief or absent loss of consciousness, short-lived confusion, and normal results on standard brain scans. While 80 to 90 percent of concussions resolve within a week or two, a meaningful minority do not. In one study, 56 percent of patients with a documented mild brain injury received no TBI-related diagnosis in the emergency department at all—a reminder that many childhood head injuries are never formally counted.

Why the numbers matter for you

These figures tell parents two things. First, a child with a brain injury is in very large company—this is a mainstream childhood health issue, not a rare event. Second, because so many mild TBIs go undiagnosed or are assumed to fully resolve, families often have to be their own best advocates in watching for lingering effects. Knowing how common these injuries are is the first step toward taking your child’s symptoms seriously and seeking the right help.