Movement Disorders USMLE Step 1 Practice Question
A 28-year-old man with acute psychosis receives high-dose haloperidol in the emergency department. Several hours later, he presents with severe neck extension, jaw spasm, and upward deviation of the eyes. Vital signs show BP 145/92 mmHg, HR 110/min, RR 18/min, temperature 37.8°C. He denies fever onset before medication administration. Serum creatinine is normal. Which of the following is the most appropriate treatment?
Answer choices
- ARiluzole
- BBenztropineCorrect answer
- CValproic acid
- DIncrease the haloperidol dose
- ELevodopa-carbidopa
- FPropranolol
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