I was looking for more info about what GJ1978 posted.

I found it interesting in that the treatments for neck injury are usually more active and physical and the treatment for concussions is more about rest and a slower return to physical activity and basically that some doctors don't look further than the concussion symptoms.

UB Researchers Find Overlaps Between Concussion, Neck Injury
University at Buffalo
Published August 26, 2014

Abstract Only - Brain or Strain - Clinical Journal of Sport Medicine
Brain or Strain? Symptoms Alone Do Not Distinguish Physiologic Concussion From Cervical/Vestibular Injury.
Leddy, John J. MD; Baker, John G. PhD; Merchant, Asim MD; Picano, John BS; Gaile, Daniel PhD; Matuszak, Jason MD; Willer, Barry PhD