1 in 5 people who suffer a mild brain injury develop mental health problems

NBC - There are some troubling new findings from the National Institutes of Health about mild brain injuries.

The study reveals about one in five people experience mental health problems up to six months after a head trauma.

People with a history of mental illness had the highest risk of developing PTSD or depression.

Experts say follow-up care after a head injury even a mild one is extremely important.