A 39-year-old man was seen by a psychiatrist after reports that he had been locking himself in his apartment because “the devil is trying to put thoughts into my head.” After three weeks of pharmacologic treatment, he begins to experience muscular rigidity, decreased perspiration, hyperthermia, and signs of autonomic instability. Which of the following drugs should be administered to the patient immediately?
(A) Dantrolene
(B) Diazepam
© Flumazenil
(D) Haloperidol
(E) Phenobarbital