This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Pharmacotherapy in psychiatry, Subject name: Psychiatry
A 30-year-old man who was recently staed on haloperidol 30mg/day developed hyperpyrexia, muscle rigidity, akinesia, mutism, sweating, tachycardia and increased blood pressure. The investigations showed increased WBC count, increased creatinine phosphokinase. There is no history of any other drug intake or any sign of infection. The most likely diagnosis 
Select and explain. 
A. Drug overdose, B. Neuroleptic malignant syndrome, C. Drug induce Parkinsonism, D. Tardive dyskinesia
B: Neuroleptic malignant syndrome
Answer: B: Neuroleptic malignant syndrome 
Explanation: Neuroleptic Malignant Syndrome (Fever, EPS, High CPK, catatonic symptoms and autonomic dysfunction) Maximum with probably haloperidol (antipsychotic) Management: Bromocriptine, Dantrolene, Baclofen, General suppoive care. Add-on lorazepam, Occasionally ECT Ref: A Sho Textbook of Psychiatry, Niraj Ahuja, 7th Edition, pg. no. 179