The Potential Roles of Cervical Plexus Abnormalities in Occipital Neuralgia: An Anatomic Variant Explored

Abstract

Occipital neuralgia (ON) is a condition defined as a headache characterized by paroxysmal burning and stabbing pain located in the distribution of the greater occipital nerve (GON), lesser occipital nerve (LON), or third occipital nerves (TON). This condition can be severely impairing in symptomatic patients and is known to have numerous etiologies deriving from various origins such as trauma, anatomical abnormalities, tumors, infections, and degenerative changes. This study reports four cases of a previously undescribed anatomical variant in which the (spinal) accessory nerve (SAN) fuses with the LON before piercing the sternocleidomastoid (SCM). The fusion of these two nerves and their route through the SCM points to a potential location for nerve compression within the SCM and, in turn, another potential source of ON. This anatomical presentation has clinical significance as it provides clinicians with another possible cause of ON to consider when diagnosing patients who present with complaints of a headache. Additionally, this study explores the prevalence of piercing anatomy of the LON and GAN and discusses their clinical implications.

Microsurgical Decompression of C2 Nerve and Ganglion as a Treatment Option for Occipital Neuralgia with Migraine

“…Another factor that may affect the outcome is the possible involvement of C3 nerve root which would be untreated in C2 decompression (34,35) .…”

The Effectiveness and Safety of Acupuncture on Occipital Neuralgia: A Study Protocol for Systematic Review and/or Meta-Analysis

“…Occipital neuralgia (ON) is characterized by spasmodic burning or stinging pain in the occipital region [1]. ON was first described as recurrent headaches in 1821 and was reported to be associated with the distribution of the third, greater, and lesser occipital nerves [2].…”