LOCATION
On the face, anterior to the ear, in a depression between the zygomatic arch and the mandibular notch, with mouth closed.
Features
Meeting point of the ST and GB meridians with the Yangwei vessel.
Body Inches (cun)
Each person has his/her own personal body inches.
One cun is equal to the width of the Knuckle of the thumb.
Nerves, vascular
The zygomatic branch of the facial nerve, the branches of the auritemporal nerve, and the transverse facial arteries, veins, maxillary arteries and veins.
Indication
Toothache，temporomandibular joint dysfunction，temporomandibular joint dislocation，jaw arthritis，masseter spasm，deafness，tinnitus；facial paralysis，trigeminal neuralgia；vertigo，dizziness，fainting，calcaneus pain。TMJ, facial pain, lower jaw toothache. Hearing issues, deafness, tinnitus, ear pain, ear discharge/infections.
Combinations
Trismus：ST 07 & ST 06 & LI 04 & TE 05.
Toothache (caries)：ST 07 & ST 05 & TE 17 & GB 12.
Trismus：ST 07 & ST 06 & LI 04 & TE 05.
Temporomandibular arthritis ：ST 07 & SI 19 & TE 17 & LI 04.
Tinnitus，deafness：ST 07 & LI 05 & TE 01 & TE 02 & SI 05.
Tinnitus，deafness，ear pain：ST 07 & TE 21 & SI 19 & TE 17 & TE 05.
穴位
在面部耳前方，當顴弓與下頜切跡所形成的凹陷中。閉口取穴。
特點
交會穴， 通足少陽。
同身寸
針灸取穴比量法。出自《千金要方》。
是指以患者本人體表的某些部位折定分寸，
作为量取穴位的長度單位。
穴區神經血管
面神經顴支，耳顳神經分支，及面橫動、靜脈，上頜動、靜脈。
適應症
牙痛，顳頜關節功能紊亂，下頜關節脫位，下頜關節炎，咬肌痙攣，耳聾，耳鳴；面神經麻痺，三叉神經痛；眩暈，足跟痛。
穴位配伍療法
牙關緊閉：1.下關 2.頰車 3.合谷 4.外關
牙齒齲痛：1.下關 2.大迎 3.翳風 4.完骨
牙關緊閉：1.下關 2.頰車 3.合谷 4.外關
顳頜關節炎：1.下關 2.聽宮 3.翳風 4.合谷
耳鳴，耳聾：1.下關 2.陽溪 3.關衝 4.液門 5.陽谷
耳鳴，耳聾，耳中痛：1.下關 2.耳門 3.聽宮 4.翳風 5.外關