Objective To observe whether vasoactive intestinal polypeptide(VIP) participates in the attack of trigeminal neuralgia, and get a deeper understanding about its pathogenetic mechanism.

• 目的观察三叉神经痛发作时局部是否有血管活性肠多肽(VIP)的参与,加深对三叉神经痛发病机制的认识。