periencephalitis

例句：

1. 1. He was diagnosed with periencephalitis and required immediate hospitalization.
   他被诊断出患有脑膜炎，需要立即住院治疗。
2. 2. The patient's condition worsened after receiving inappropriate treatment for periencephalitis.
   患者在接受不当的脑膜炎治疗后病情恶化。
3. 3.The doctor explained that the symptoms of periencephalitis could be life-threatening if not treated promptly.
   医生解释说，如果不及时治疗，脑膜炎的症状可能会危及生命。