The greater occipital nerve is one of the most important nerves in transmitting touch, pain, or temperature sensations in the scalp to the brain and is frequently linked to migraines or chronic headaches that arise from the base of the neck.
Occipital nerve block is a minimally invasive therapeutic procedure used to treat pain conditions like the occipital neuralgia, cluster headaches, migraines etc.
It is performed through injection of steroids and a local anesthetic into the base of the skull, where the occipital nerves are located. This stops the flow of information, especially pain signals, from these nerves, leading to a decrease in chronic headaches. Occipital nerve blocks can also be used to reduce swelling and inflammation in the back of the head.