例1 男,11岁,体重29kg。因感冒、恶心、呕吐,肌注灭吐灵两次,用量分别为10mg 和8mg,间隔8小时。在末次注射16小时后,病儿突然头向左扭曲90°,两眼球固定,向右侧斜视,头不能转动,面容呆板,两下肢不能直立,持续3分钟缓解。无头疼未发生呕吐,但诉颈部肌肉酸疼。15分钟后再次发作,头右转90°,眼球固定向右侧斜视,约2分 Example 1 male, 11 years old, weighing 29kg. Due to a cold, nausea, vomiting, intramuscular metronidazole twice, the dosage was 10mg and 8mg, an interval of 8 hours. 16 hours after the last injection, the sick child suddenly twisted 90 ° to the left. The two eyes were fixed, the right side was strabismus, the head could not rotate, his face was stiff, and the two lower limbs could not stand up for 3 minutes. No headache vomiting did not occur, but v. Neck muscle soreness. 15 minutes after the attack, turn right 90 °, the eye fixed to the right strabismus, about 2 minutes