Posterior rhizotomy of the second and third cervical nerves for occipital pain.
D001917:Brachial Plexus; D002572:Cervical Plexus / Q000601:surgery*; D006261:Headache; D006801:Humans; D010146:Pain; D019051:Rhizotomy
HEADACHE; NERVES, CERVICAL PLEXUS/surgery