Overview

A concussion is a traumatic brain injury that affects your brain function. Effects are usually temporary but can include headaches and problems with concentration, memory, balance and coordination.

Concussions are usually caused by a blow to the head. Violently shaking of the head and upper body also can cause concussions.

Some concussions cause you to lose consciousness, but most do not.

Falls are the most common cause of concussion. Concussions are also common if you play a contact sport, such as football or soccer. Most people usually recover fully after a concussion.