Scalp block insertion sites

The numbered dots in this graphic show the needle insertion sites for injection of local anesthetic for the six nerve blocks that comprise the scalp block, as follows:
(1) Supraorbital and supratrochlear nerve blocks
(2) Zygomaticotemporal nerve block
(3) Auriculotemporal nerve block
(4) Lesser occipital nerve
(5) Greater occipital nerve
For details of block technique, refer to UpToDate topic on nerve blocks of the scalp, neck, and trunk, section on scalp block.