Occipital Nerve Block
An occipital nerve block is an injection of a steroid around the occipital nerves on the back of the head, just above the neck areas. The steroid reduces the inflammation of tissue around the occipital nerves, blocking the transmission of painful signals to the brain, which in turn may reduce pain such as tension headaches and migraine headaches.
If the occipital nerve block has been successful, that side of your head may feel numb. The amount of time elapsed for pain relief varies from person to person ranging from instantaneous for some to taking a couple of days for others.