患者,男,70岁,以“牙龈裂开”就诊。问诊得知,半年前患三叉神经带状疱疹。起病初期表现为牙痛,在当地卫生所口服抗炎药(药名及剂量不详)治疗三天,后面部出现大量水疱,剧烈疼痛,于当地县医院诊断为带状疱疹,住院治疗一个月(阿昔洛韦片口服+维生素B1),现出院近半年,面部仍有神经性疼痛。患病第3个月左右时,右侧下颌牙齿先后 Patient, male, 70 years old, with “gingival rupture”. Medical consultation that six months ago with trigeminal nerve herpes zoster. The initial onset of toothache, in the local health clinic oral anti-inflammatory drugs (drug name and dose unknown) for three days, the back of a large number of blisters, severe pain, diagnosed at the local county hospital herpes zoster, hospitalized for one month Acyclovir tablets oral + vitamin B1), is now discharged nearly six months, the face is still neuropathic pain. When the first 3 months of illness, the lower jaw teeth successively