TE-18 Qimai (契脈) — Spasm Vessel

Posterior to the ear, at the center of the mastoid process, in the lower third of the curve connecting TE-17 and TE-20.

Seated or in lateral decubitus, locate the point at the intersection of the retroauricular hairline and the line of the opening of the external auditory canal.

Posterior auricular muscle. Innervated by the great auricular nerve. Posterior auricular artery.

Transverse (subcutaneous) insertion, 0.3–0.5 cun.

Chi (瘈), convulsion; Mai (脉), blood vessel. The point lies behind the ear, where the collaterals are distributed. It is used for the treatment of convulsions.