TOPICS: Extrapyramidal symptoms, acute dystonia, muscle spasm, stiffness, oculogyric crisis (prolonged, involuntary, upward gaze), laryngospasm, require intubation, benztropine, M1 antagonist, diphenhydramine, late EPS include akathisia, feeling of restlessness, benztropine, beta blockers, benzodiazepines, drug induced Parkinsonism, benztropine, amantadine, very late EPS include tardive dyskinesia, orofacial chorea, deutetrabenazine, valbenazine, atypical antipsychotics
