RT Journal Article SR Electronic T1 Difficulties in diagnosing neuroleptic malignant syndrome JF Neurosciences Journal JO Neurosciences (Riyadh) FD Prince Sultan Military Medical City SP 131 OP 133 VO 7 IS 2 A1 Zolezzi, Monica S. A1 Al-Hathloul, Abdullah M. YR 2002 UL http://nsj.org.sa/content/7/2/131.abstract AB This report describes a recent case of neuroleptic malignant syndrome, a rare adverse effect of antipsychotic medications. Assessment of the neuroleptic malignant syndrome was carried out by using the Naranjo Algorithm Probability Scale which resulted in a highly probable reaction to haloperidol. The difficulties in establishing the diagnosis in this patient lead to late intervention resulting in a slow recovery and prolonged hospitalization. Our objective in this presentation is to highlight the importance of early recognition of this potentially fatal adverse drug reaction.