Definition of Neuroleptic:
A term coined to refer to the effects on cognition and behavior of the original antipsychotic agents, which produced a state of apathy, lack of initiative, and limited range of emotion and in psychotic patients caused a reduction in confusion and agitation and normalization of psychomotor activity. The term is still used to refer to agents, such as droperidol, used to produce such effects as part of anesthesia or analgesia; however, it is outdated as a synonym for antipsychotic agents because newer agents do not necessarily have such effects [Miller-Keane2003].
Neuroleptic malignant syndrome a rare but dramatic condition that occurs in severely ill patients being treated with high-potency antipsychotics (neuroleptics); symptoms include diaphoresis, muscle rigidity, and hyperpyrexia. It is believed to be caused by dopamine blockade in the hypothalamus. [Miller-Keane2003].
Any of a class of psychotropic drugs used to treat psychosis, particularly schizophrenia; includes the phenothiazine, thioxanthene, and butyrophenone derivates and the dihydroindolones [Farlex2012].