"Whiplash"-injury of the 2nd cervical ganglion and nerve.

Amongst the many patients with persisting neck pain and headache following cervical injuries are a small number in whom the mechanism is compression of the second cervical nerve root and ganglion. This paper describes the clinical features in 14 patients seen by the author. The main features are unilateral pain in the upper cervical and occipital region, tenderness in the suboccipital region, and diminished sensation in the C2 dermatome. The anatomical basis for this syndrome is discussed and illustrated with dissections from a cadaver.