Which feature is NOT associated with Neuroleptic syndrome?

Neuroleptic Malignant Syndrome (NMS) is a serious and potentially life-threatening condition that can occur in response to antipsychotic (neuroleptic) medications. It is characterized by various symptoms that reflect a severe reaction to medication, particularly related to muscle rigidity, altered mental status, and autonomic instability.

In the context of NMS, increased motor activity does not align with the typical presentation of the syndrome. Instead, patients usually experience significant reductions in motor activity, characterized by symptoms such as emotional quieting, affective indifference, and psychomotor slowing. These features highlight the profound impact of the syndrome on an individual's mental and physical state.

Emotional quieting refers to a diminished emotional response, while affective indifference indicates a lack of emotional engagement with the environment. Psychomotor slowing manifests as a notable reduction in the speed and variability of movement. Collectively, these symptoms indicate a severe withdrawal from normal emotional and motor function, which starkly contrasts with the idea of increased motor activity. Thus, the correct feature that is not associated with Neuroleptic Malignant Syndrome is increased motor activity.