One of the most common mood problems that can occur with concussion is depression. It's important to ask if the service member had any signs of depression prior to the mTBI. Prior psychological health issues should be carefully examined to determine if, and how, the intensity and severity of symptoms have changed since the concussion.

Dr. Joel Scholten says it's critical to ask people who seem sad or lethargic if they have had suicidal thoughts.

Thoughts of Suicide Are Not Uncommon After a Brain Injury

"When we think of depression we also need to think about risk of suicide…"

Current suicidal thoughts need to be treated as an emergency. A report of occasional suicidal thoughts merits prompt referral and follow-up. Here are resources for service members: