The posterior auricular nerve is a branch of the facial nerve. It originates just after facial nerve exits stylomastoid foramen, passes posteriorly to supply some of the muscles around the pinna, the occipital portion of the occipitofrontalis muscle 1-3.
Summary
location: posterior to the
origin and course: facial nerve, just distal to the stylomastoid foramen
branches and supply: auricular branch (posterior and superior auricular muscles) and occipital branch (occipital portion of the occipitofrontalis muscle)
relations: passes anterior to the mastoid process with the posterior auricular artery
The posterior auricular nerve communicates with several other regional nerves, including the auricular branch of the vagus nerve, the great auricular nerve, and the lesser occipital nerve 1.
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