Research from London and Taipei finds that neuroleptic malignant syndrome (NMS) is associated with the number of different antipsychotics used (polypharmacy), rather than the overall dose. The researchers also found an association between NMS and Haldol, Abilify, benzodiazepines, and depot flupentixol. A correlation between NMS and non-white ethnicity was also found.
Su, Y., Chang, C., Hayes, R., Harrison, S.; Retrospective chart review on exposure to psychotropic medications associated with neuroleptic malignant syndrome. Acta Psychiatrica Scandinavica. Online November 15, 2013. DOI: 10.1111/acps.12222