Respuesta :

A concussion is a brain injury caused by a blow to the head or a violent shaking of the head or body.

There are many symptoms of a concussion but common symptoms include headaches, confusion, lack of coordination, memory loss, dizziness, excessive fatigue, etc.
A concussion is a injury to the brain, in a form that the brain was impacted or moved in some way, symptoms for a concussion are, headache, dizziness,memory loss, confusion.