A 40-year-old man with schizophrenia started haloperidol 2 days ago. He now presents with severe subjective inner restlessness and cannot sit still. Vitals show BP 138/82, HR 98, RR 16, temp 37.2°C, SpO2 98%. He repeatedly stands, paces, and sits down. Neurologic exam reveals normal strength and coordination; no tremor noted. Serum creatinine and electrolytes are normal. Which diagnosis best explains his symptoms?

1. A)Acute dystonia
2. B)Tardive dyskinesia
3. C)Parkinsonism
4. D)AkathisiaGABARITO
5. E)Neuroleptic malignant syndrome