diphtheritis

例句：

1. 1. The patient developed diphtheritis after being bitten by a spider.
   病人被蜘蛛咬后患上了脓疱病。
2. 2.The doctor diagnosed the patient with diphtheritis and prescribed antibiotics for treatment.
   医生诊断出患者患有脓疱病，并开了抗生素进行治疗。
3. 3. The infection spread rapidly, causing severe pain and swelling around the affected area.
   感染迅速扩散，导致受影响区域周围出现剧烈疼痛和肿胀。