Auriculotemporal Nerve, Lateral View

Description

Arising from the mandibular division of the trigeminal nerve (V3), the auriculotemporal nerve is traced in lateral profile as it ascends posterior to the temporomandibular joint, then turns superiorly in front of the auricle toward the temporal region. Its course is shown deep to the superficial fascia as it approaches the temporalis, running in the same corridor as the superficial temporal vessels and crossing the zygomatic arch region. Nearby landmarks expected in this dissection-style cutaway include the parotid gland overlying the posterior ramus of the mandible, the masseter laterally, and the cartilaginous external ear. Relationships matter here. Clinically, this view clarifies why auriculotemporal neuralgia and referred otalgia can track from the preauricular area into the temple, often triggered by temporomandibular joint dysfunction or irritation near the joint capsule. The nerve’s intimate relationship with the parotid bed also explains sensory symptoms after parotidectomy and the pathway involved in Frey syndrome (gustatory sweating) when postganglionic parasympathetic fibers destined for the parotid are misdirected to cutaneous sweat glands. For regional anesthesia, the lateral trajectory helps target an auriculotemporal nerve block used for pain over the temporal scalp and preauricular region, while keeping awareness of the adjacent superficial temporal artery. Medical educators can place this plate in head and neck anatomy labs to teach V3 branch patterns, parotid region layering, and the sensory map around the auricle and temple, and authors can pair it with chapters on TMJ disorders, parotid surgery, or cranial nerve pain syndromes. Surgical teams and pain clinicians will also find it suited for patient-facing explanations of preauricular injections and post-parotid sensory changes. Anatomical accuracy verified by SciePro's Medical Advisory Board.