Concussion is the most common form of traumatic brain injury (TBI), affecting around 42 million people worldwide each year. It is the result of a physical blow or sudden jolt that forces the brain to move within the skull. The cerebrospinal fluid that usually protects the brain is not enough to stop it from hitting the skull and causing neuron damage.
Most people will make a quick and complete recovery after concussion. However, neurosurgeons and other brain experts stress that there is no such thing as a minor concussion. The effects can be significant, especially when a person suffers concussion a second time before they have had a chance to recover from the first injury. Contrary to popular belief, you don’t have to lose consciousness (pass out) to have concussion and even mild forms should be taken seriously.