患儿男,4.5岁。因发烧3天,伴头痛、头晕、恶心、呕吐3次,在院外按上感胃肠型、支气管肺炎治疗无好转而来我院。体检:T40.3℃,P136次/min,R46次/min,BP10.6/8.0kPa。急性热病容,咽部充血,双侧扁桃体Ⅱ°肿大,膝反射减弱,病理反射未引出。实验室检查:Hb91g/L,RBC 473×10~(12)/L,WBC 17.3×10~9/L,N80%,L13%,M3%,ESR 8mm/h,初步诊 Children male, 4.5 years old. Due to fever for 3 days, with headache, dizziness, nausea, vomiting 3 times, according to the sense of gastrointestinal type in the hospital, bronchial pneumonia without improvement in our hospital. Physical examination: T40.3 ℃, P136 times / min, R46 times / min, BP10.6 / 8.0kPa. Acute fever, throat congestion, bilateral tonsil enlargement, knee reflex decreased, pathological reflex did not lead. Laboratory tests: Hb 91g / L, RBC 473 × 10-12 / L, WBC 17.3 × 10-9 / L, N80%, L13%, M3%, ESR 8mm / h,