The concussion is an immediate and transient loss of neuronal function secondary to trauma. (Neuronal Function = LOC, memory or motor skills).
<span>The impact shakes the brain inside the skull, a wave through brain tissue causes discharge of damaging chemicals; nerve cells can shear, microscopic damage can affect the anatomy and function of brain cells.
</span><span>It is a mild traumatic brain injury </span>caused<span> by a bump, jolt, or blow to the head. </span>
