The greater occipital nerve is a major sensory nerve that originates in the spinal cord's upper cervical spine region. This nerve commonly referred to as the GON, is comprised of nerve fibers that innervate the scalp's posterior segment. It is often associated with medical conditions like migraines, occipital neuralgia, and cervicogenic headaches. As a result, medical researchers and practitioners commonly use synonyms such as the Arnold nerve, the first occipital nerve, or the dorsal ramus of the C2 cervical spine to refer to the GON. Understanding the various synonyms for the greater occipital nerve is vital in helping patients effectively communicate their symptoms and allowing doctors to provide the best possible treatment.