<unk>  is a complex neuropsychiatric behavioral syndrome that is characterized by abnormal movements, immobility, abnormal behaviors, and withdrawal. The onset of<unk>  can be acute or subtle and symptoms can wax, wane, or change during episodes. There are several subtypes of<unk> : akinetic<unk> , excited<unk> , malignant<unk> , delirious mania, and self-injurious behaviors in autism. Although<unk>  has historically been related to schizophrenia <unk>  schizophrenia),<unk>  is most often seen in mood disorders. It is now known that<unk>  symptoms are nonspecific and may be observed in other mental, neurological, and medical conditions.<unk>  is not a stand-alone diagnosis (although some experts disagree), and the term is used to describe a feature of the underlying disorder. Recognizing and treating<unk>  is very important as failure to do this can lead to poor outcomes and can be potentially fatal. Treatment with benzodiazepines or ECT can lead to remission of<unk> . There is growing evidence of the effectiveness of the NMDA receptor antagonists amantadine and memantine for benzodiazepine-resistant<unk> . Antipsychotics are sometimes employed, but they can worsen symptoms and have serious adverse effects.
Catatonia
Neuroleptic malignant syndrome
Paratonia
Childhood schizophrenia
Cataplexy
Clonus
Catalepsy
Psychomotor agitation