This article came in via the Health New Headlines Forum today.
I thought I'd post in light of some of the more recent posts regarding inflammation.

PsychCentral News
Inflammation Seems to Underlie Concussion Symptoms

McMaster News
It doesn't take a brain injury to have headache, dizziness and cognitive impairment
Published: May 6, 2015

from Science Direct
A review of the neuro- and systemic inflammatory responses in post concussion symptoms: Introduction of the “post-inflammatory brain syndrome” PIBS
Brain, Behavior, and Immunity
Volume 46, May 2015, Pages 1–16