Originally Posted by Mark in Idaho

Tension in the neck is usually due to an undiagnosed subtle neck injury. The shock to the head also impacts the neck, specifically the upper neck, C-1 and C-2. Gentle physiotherapy would be good. No pushing for range of motion. Just gentle movement and mobilizations with some gentle traction. You also need to be very cautious and disciplined to take care of your neck. This means good neck posture, especially when resting or sleeping. No thick pillows.

A neck injury can take many months of disciplined behavior to heal.

My best to you.