原发性三叉神经痛(trigeminal neuralgia)表现为单侧头面部三叉神经分布区域电击样剧烈疼痛发作[1]。由于后颅窝解剖特点,此病在黄种人中发生率较高[2]。其病因系三叉神经颅内段受周围血管压迫,但具体发病机制尚不明。笔者的初步研究结果认为,该病的本质是三叉神经脱髓鞘变性和异位动作电位形成。对于那些在解剖上三叉神经根和其周围脑血管较靠近的人,随年龄增长会发生不同程度的 Primary trigeminal neuralgia manifests as a severe electrical shock-like episode of unilateral facial trigeminal nerve distribution [1]. Due to the posterior fossa anatomy, the disease is more frequent in yellowish people [2]. The etiology of the trigeminal nerve intracranial vascular compression by the surrounding, but the specific pathogenesis is not yet clear. The author’s preliminary study concluded that the nature of the disease is demyelinating degeneration and trigeminal action potential formation. For those who are anatomically close to the trigeminal nerve root and its surrounding cerebral vessels, varying degrees of