A concussion is a brain injury that occurs when you receive a sudden blow or jolt to the head. It is a type of traumatic brain injury (TBI). Your doctor may call a concussion a "mild brain injury." Most concussions are not life- threatening, but they can have serious effects. A concussion may lead to thinking, sleeping, and balance problems, and symptoms. In rare cases, a blood clot may form on the brain after a concussion. This is a life-threatening condition. Warning signs include persistent headache, extreme drowsiness, slurred speech, and repeated vomiting or nausea. Follow the links below to find WebMD's comprehensive coverage about concussion, how it develops, what the symptoms are, how to treat it, and much more.
What Is Dementia?
What dementia is, the different kinds, and what to expect.
Dementia in Head Injury
Dementia is a common consequence of head injuries. Learn more from WebMD about symptoms, diagnosis, treatment, and outlook.
When to Call 911 About a Childhood Emergency
How do you know if your child is having a medical emergency? WebMD offers a guide to conditions that require immediate care.
Brain Damage: Symptoms, Causes, Treatments
WebMD examines common causes of brain damage, along with types, symptoms, diagnosis, and treatments.
Brain Injuries: Treatment and Recovery of Francesco Bertolotti of Modena (Italy)
The Associated Press reported that Bertolotti was hit with an uppercut and struck his head on the floor when he fell.
Men are at high risk for head injuries, including concussion, because of contact sports.
Bob Woodruff's Traumatic Brain Injury Recovery
ABC News journalist Bob Woodruff talks with WebMD about his experiences before, during, and after a traumatic brain injury that occurred in Iraq while on a 2006 reporting assignment.
Football Concussion Controversy: New Rules
Concussions are common in contact sports like football, but they can have serious long-term effects. Read about the concussion controversy in football, what the NFL is doing about it, and guidelines for treatment and recovery.