The vast majority of these nerves Management the capabilities from the higher extremities and let you experience your arms, shoulder, and back again within your head.  Every single nerve offers feeling to a specific area of your body called a dermatome.  tchrist♦tchrist 139k4949 gold badges379379 silver badges621621 bronze badges three https://www.theorthopaedicandpainpractice.com/treatment-for-neck-pain-headaches/