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A concussion or mild traumatic brain injury (MTBI) is most often caused by a sudden direct blow or bump to the head which causes a temporary loss of neural activity.

The following are common concussion symptoms:

Absence of consciousness or altered consciousness, headache, confusion, disorientation, vision disturbances, dizziness, nausea or vomiting, impaired balance, memory loss, tinnitus or ringing in the ears, difficulty concentrating, sensitivity to light, emotional changes, and loss of smell or taste.

Here are some interesting statistics:

An estimated 1.7 million people ...

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