患者女,20岁。10天前左下后牙疼痛,第五天出现张口受限,不能进食。 检查:(?)远中龈瓣复盖,充血、红肿。初诊:(?)冠周炎。经全身抗感染治疗,病情不见好转,并出现嚼肌痉挛,牙关紧闭,呈苦笑面容,四肢抽搐、颈强直、呼吸困难、角弓反张等症状。进一步确诊为 Female patient, 20 years old. Left lower back pain 10 days ago, the fifth day appeared limited mouth opening, can not eat. Check: (?) Far gingival flap cover, congestion, swelling. First visit: (?) Pericoronitis. After systemic anti-infective treatment, the condition did not improve, and there was a chewing muscle spasm, teeth closed, showing a smile face, limbs twitching, stiff neck, difficulty breathing, angle arch anti-Zhang and other symptoms. Further confirmed as