Malignt neuroleptikasyndrom er karakteriseret ved stivhed, muskeltrækninger, rysten, mentale ændringer, bevidstløshed, høj feber, hurtig hjertebanken og ustabilt blodtryk.
NMS is a rare severe reaction to medicines used to treat disorders of the central nervous system and 19 characterised by stiffness, muscle twitching, shaking, mental changes, coma, high body temperature, increased heart rate and unstable blood pressure.