<prompt> A 30-year-old man who was recently staed on haloperidol 30mgday developed hyperpyrexia, muscle rigidity, akinesia, mutism, sweating, tachycardia and increased blood pressure. The investigations showed increased VVBC count, increased creatinine phosphokinase. There is no history of any other drug intake or any signs of infection. The most likely diagnosis is:Drug overdoseNeuroleptic malignant syndromeDrug induce ParkinsonismTardive dyskinesia  <response>: B i.e. Neuroleptic malignant syndrome 