外關(guān)∶三焦經(jīng)穴在掌背去腕二寸骨縫兩筋陷中伏手取之主風(fēng)寒經(jīng)絡(luò)皮肢病與臨泣主客相應(yīng)凡治必先取外關(guān)而刺之